#include<stdio.h>

#include<conio.h>

void main()

{

int a,b,s;

clrscr();

printf("Enter two no: ");

scanf("%d%d",&a,&b);

s=a+b;

printf("sum=%d",s);

getch();

}

Output:

Enter two no: 10 11

sum = 11

#include<stdio.h>

#include<conio.h>

void main()

{

int r;

float pi=3.14,area,ci;

clrscr();

printf("enter radius of circle: ");

scanf("%d",&r);

area=pi*r*r;

printf("area of circle=%f ",area);

ci=2*pi*r;

printf("circumference=%f ",ci);

getch();

}

Output:

enter radius of a circle: 5

area of circle=78.000

circumference=31.4

#include<stdio.h>

#include<conio.h>

void main()

{

int p,r,t,si;

clrscr();

printf("Enter Principle, Rate of interest & time to find simple interest: ");

scanf("%d%d%d",&p,&r,&t);

si=(p*r*t)/100;

printf("Simple intrest equal to %d",si);

getch();

}

Output:

Enter Principle, Rate of interest & time to find simple interest: 500

5

2

Simple interest equal to 50

#include<stdio.h>

#include<conio.h>

void main()

{

float c,f;

clrscr();

printf("enter temp in centigrade: ");

scanf("%f",&c);

f=(1.8*c)+32;

printf("temp in Fahrenheit=%f ",f);

getch();

}

Output:

Enter temp in centigrade: 32

Temp in Fahrenheit=89.59998

#include<stdio.h>

#include<conio.h>

void main()

{

int s1, s2, s3, s4, s5, sum, total=500;

float per;

clrscr();

printf("Enter marks of 5 subjects: ");

scanf("%d%d%d%d%d",&s1,&s2,&s3,&s4,&s5);

sum=s1+s2+s3+s4+s5;

printf("sum=%d",sum);

per=(sum*100)/total;

printf("percentage=%f",per);

getch();

}

Output:

Enter marks of 5 subjects: 60 65 50 60 60

sum=300

percentage=60.000

#include<stdio.h>

#include<conio.h>

void main()

{

int a,b;

clrscr();

printf("enter value for a & b: ");

scanf("%d%d",&a,&b);

a=a+b;

b=a-b;

a=a-b;

printf("after swapping the value of a & b: %d %d",a,b);

getch();

}

Output: 

enter value for a & b: 4 5

after swapping the value of a & b: 5 4

#include<stdio.h>

#include<conio.h>

void main()

{

int n,a,r=0;

clrscr();

printf("enter any no to get its reverse: ");

scanf("%d",&n);

while(n>=1)

{

a=n%10;

r=r*10+a;

n=n/10;

}

printf("reverse=%d",r);

getch();

}

Output:

enter any no to get its reverse: 456

reverse=654

#include<stdio.h>

#include<conio.h>

void main()

{

int gs,bs,da,ta;

clrscr();

printf("enter basic salary: ");

scanf("%d",&bs);

da=(10*bs)/100;

ta=(12*bs)/100;

gs=bs+da+ta;

printf("gross salary=%d",gs);

getch();

}

Output:

enter basic salary: 100

gross salary=122

#include<stdio.h>

#include<conio.h>

void main()

{

int a,b,c;

clrscr();

printf("enter value of a, b & c: ");

scanf("%d%d%d",&a,&b,&c);

if((a>b)&&(a>c))

printf("a is greatest");

if((b>c)&&(b>a))

printf("b is greatest");

if((c>a)&&(c>b))

printf("c is greatest");

getch();

}

Output:

enter value for a, b & c: 5

7

4

b is greatest

#include<stdio.h>

#include<conio.h>

void main()

{

clrscr();

printf("enter value for a & b: ");

scanf("%d%d",&a,&b);

(a>b)?printf("a is greater"):printf("b is greater");

getch();

}

Output:

enter value for a & b: 5 7

b is greater

#include<stdio.h>

#include<conio.h>

void main()

{

int n;

 clrscr();

printf("enter any year: ");

scanf("%d",&n);

if(n%4==0)

printf("year is a leap year");

else

printf("year is not a leap year");

getch();

}

Output:

enter any year: 1947 year is not a leap year

#include<stdio.h>

#include<conio.h>

void main()

{

int n;

clrscr();

printf("enter any no: ");

scanf("%d",&n);

if(n%2==0)

printf("no is even");

else

printf("no is odd");

getch();

}

Output: 

enter any no: 5 no is odd

#include<stdio.h>

#include<conio.h>

void main()

{

int x,y;

 clrscr();

printf("Read the integer from keyboard :- ");

scanf("%d",&x);

x<<=3;

y=x;

printf("\nThe left shifted data is = %d ",y);

getch();

}

Output:

Read the integer from keyboard :- 2

The left shifted data is = 16

#include<stdio.h>

#include<conio.h>

void main()

{

char ch;

 clrscr();

printf("enter m for Monday\nt for Tuesday\nw for Wednesday\nh for Thursday\nf for Friday\ns for Saturday\nu for Sunday);

scanf("%c",&ch);

switch(ch)

{

case 'm':

case 'M': printf("monday");

 break;

case 't':

case 'T': printf("tuesday");

 break;

case 'w':

case 'W': printf("wednesday");

 break;

case 'h':

case 'H': printf("thursday");

 break;

case 'f ':

case 'F': printf("friday");

 break;

case 's':

case 'S': printf("saturday");

 break;

case 'u':

case 'U': printf("sunday");

 break;

default : printf("wrong input");

 break;

}

getch();

}

Output:

enter m for Monday t for Tuesday

w for Wednesday h for Thursday

f for Friday

s for Saturday u for Sunday: f friday

#include<stdio.h>

#include<conio.h>

void main()

{

int a,b,n,s,m,su,d;

 clrscr();

printf("enter two no's : ");

scanf("%d%d",&a,&b);

printf("enter 1 for sum\n2 for multiply\n3for subtraction\n4 for division: ");

scanf("%d",&n);

switch(n)

{

case 1:

s=a+b;

 printf("sum=%d",s);

 break;

case 2:

m=a*b;

 printf("multiply=%d",m);

 break;

case 3:

su=a-b;

 printf("subtraction=%d",su);

 break;

case 4:

d=a/b;

 printf("divission=%d",d);

 break;

default: printf("wrong input");

 break;

}

getch();

}

Output:

enter two no's: 8 4

enter 1 for sum

2 for multiply

3   for subtraction

4   for division: 1

sum=12

#include<stdio.h>

#include<conio.h>

void main()

{

int a,b,n,s,m,su,d;

clrscr();

printf(“enter two nos : ”);

scanf(“%d%d”,&a,&b);

printf(“enter 1 for sum\n2 for multiply\n3for subtraction\n4 for division: ”);

scanf(“%d”,&n);

switch(n)

{

case 1:

s=a+b;

printf(“sum=%d”,s); break;

case 2:

m=a*b;

printf(“multiply=%d”,m); break;

case 3:

su=a-b;

printf(“subtraction=%d”,su); break;

case 4:

d=a/b;

printf(“divission=%d”,d); break;

default:

printf(“wrong input”); break;

}

getch();

}

Output:

enter two nos: 12 10

enter 1 for sum

2 for multiply

3 for subtraction

4 for division:

1

sum = 22

#include<stdio.h>

#include<conio.h>

void main()

{

int i,sum=0;

clrscr();

for(i=1;i<=10;i++)

{

printf(“%d no is= %d\n”,i,I);

sum=sum+i;

}

printf(“sum =%d”,sum);

getch();

}

Output:

1   no is=1

2   no is=2

3   no is=3

4   no is=4

5   no is=5

6   no is=6

7   no is=7

8   no is=8

9   no is=9

10  no is=10

sum=55

#include<stdio.h>

#include<conio.h>

void main()

{

int i,j,k;

clrscr();

for(i=1;i<=5;i++)

{

for(j=5;j>=i;j--)

printf(“ ”);

for(k=1; k<=i; k++)

printf(“*”);

printf(“\n”);

}

getch();

}

Output:

*

**

***

****

*****

#include<stdio.h>

#include<conio.h>

void main()

{

int i,j,k;

clrscr();

for(i=1;i<=3;i++)

{

for(j=3;j>=i;j--)

printf(“ ”);

{

for(k=1;k<=i*2-1;k++)

printf(“*”);

}

printf(“\n”);

}

getch();

}

Output:

*

***

*****

#include<stdio.h>

#include<conio.h>

void main()

{

int a=1,b=1,c=0,i;

clrscr();

printf("%d\t%d\t",a,b);

for(i=0;i<=10;i++)

{

c=a+b; if(c<100)

{

printf("%d\t",c);

}

a=b; b=c;

}

getch();

}

Output:

1 1 2 3 5 8 13 21 34 55 89

#include<stdio.h>

#include<conio.h>

void main()

{

int n,i,fact=1;

clrscr();

printf(“Enter any no: ”);

scanf(“%d”,&n);

for(i=n;i>=1;i--)

{

fact=fact*i;

}

printf(“Factorial=%d”,fact);

getch();

}

Output:

Enter a no: 6

Factorial=720

#include<stdio.h>

#include<conio.h>

void main()

{

int i,n,r=0; clrscr();

printf(“Enter any no: ”);

scanf(“%d”,&n);

for(i=2;i<=n-1;i++)

{

if(n%i==0)

r=1;

break;

}

if(r==0)

printf(“prime no”);

else

printf(“Not prime”);

getch();

}

Output:

Enter any no: 16

Not prime

#include<stdio.h>

#include<conio.h>

void main()

{

int n,i,sum=0;

clrscr();

printf("Enter any no: ");

scanf("%d",&n);

printf("1");

for(i=2;i<=n-1;i++)

printf(" 1/%d +",i);

for(i=1;i<=n;i++)

sum=sum+i;

printf(" 1/%d",n);

printf("\nSum=1/%d",sum+1/n);

getch();

}

Output:

Enter any no: 7

1 + 1/2 + 1/3 + 1/4 + 1/5 + 1/6 + 1/7

Sum=1/28

#include<stdio.h>

#include<conio.h>

void main()

{

int n,i,sum=0;

clrscr();

printf("Enter any no: ");

scanf("%d",&n);

for(i=1;i<n;i=i+2)

{

printf("%d+",i); sum=sum+i;

}

printf("%d",n);

printf("\nsum=%d",sum+n);

getch();

}

Output:

Enter any no: 7

1+3+5+7

Sum=16

#include<stdio.h>

#include<conio.h>

void main()

{

int a,b,c;

clrscr();

printf("Read the integers from keyboard:- ");

scanf("%d %d",&a,&b);

c=a&b;

printf("\nThe Answer after ANDing is: %d ",c);

getch();

}

Output:

Read the integers from keyboard:- 8 4

The Answer after ANDing is: 0

#include<stdio.h>

#include<conio.h>

void main()

{

int *p1,*p2,sum;

clrscr();

printf("enter two no’s: ");

scanf("%d%d",&*p1,&*p2);

sum=*p1+*p2;

printf("sum=%d",sum);

getch();

}

Output:

enter two no's: 10 20

sum=30

#include<stdio.h>

#include<conio.h>

void main()

{

int *p1,*p2,sum;

clrscr();

printf("enter two no’s: ");

scanf("%d%d",&*p1,&*p2);

sum=*p1+*p2;

printf("sum=%d",sum);

getch();

}

Output:

enter two no's: 10 20

sum=30

#include<stdio.h>

#include<conio.h>

void main()

{

int a[10],i,sum=0; float av;

clrscr();

printf("enter elements of an aaray: ");

for(i=0;i<10;i++)

scanf("%d",&a[i]);

sum=sum+a[i];

printf("sum=%d",sum);

av=sum/10;

printf("average=%.2f",av);

getch();

}

Output:

enter elements of an array: 4 5 6 1 2 3 5 5 4 7

sum=42

average=4.22

#include<stdio.h>

#include<conio.h>

void main()

{

int a[5],max,i;

clrscr();

printf("enter element for the array: ");

for(i=0;i<5;i++)

scanf("%d",&a[i]);

max=a[0];

for(i=1;i<5;i++)

{

if(max<a[i])

max=a[i];

}

printf("maximum no= %d",max);

getch();

}

Output:

enter elements for array: 5 4 7 1 2

maximum no= 7

#include<stdio.h>

#include<conio.h>

void main()

{

int a[3][2],b[3][2],i,j;

clrscr();

printf("enter value for a matrix: ");

for(i=0;i<3;i++)

{

for(j=0;j<2;j++)

scanf("%d",&a[i][j]);

}

printf("enter value for b matrix: ");

for(i=0;i<3;i++)

{

for(j=0;j<2;j++)

scanf("%d",&b[i][j]);

}

printf("\na matrix is\n\n");

for(i=0;i<3;i++)

{

for(j=0;j<2;j++)

{

printf(" %d ",a[i][j]);

}

printf("\n");

}

printf("\nb matrix is\n\n");

for(i=0;i<3;i++)

{

for(j=0;j<2;j++)

{

printf(" %d ",b[i][j]);

}

printf("\n");

}

getch();

}

Output:

enter value for a matrix: 7 8 9 4 5 6

enter value for b matrix: 3 2 1 4 5 6

a matrix is

7 8

9 4

5 6

b matrix is

3 2

1 4

5 6

#include<stdio.h>

#include<conio.h>

void main()

{

int a[3][2],b[3][2],c[3][2],i,j;

clrscr();

printf("Enter value for 1 matrix: ");

for(i=0;i<3;i++)

{

for(j=0;j<2;j++)

scanf("%d",&a[i][j]);

}

printf("Enter value for 2 matrix: ");

for(i=0;i<3;i++)

{

for(j=0;j<2;j++)

scanf("%d",&b[i][j]);

}

for(i=0;i<3;i++)

{

for(j=0;j<2;j++)

c[i][j]=a[i][j]+b[i][j];

}

printf("Sum of matrix is\n");

for(i=0;i<3;i++)

{

for(j=0;j<2;j++)

{

printf("%d\t",c[i][j]);

}

printf("\n");

}

getch();

}

Output:

Enter value for 1 matrix: 1 2 3 4 5 6

Enter value for 2 matrix: 4 5 6 1 3 2

Sum of matrix is

5 7

9 5

8 8

#include<stdio.h>

#include<conio.h>

void main()

{

int a[5],b[5],c[5],i;

clrscr();

printf("enter value for array a ");

for(i=0;i<5;i++)

scanf("%d",&a[i]);

printf("enter value for array b ");

for(i=0;i<5;i++)

scanf("%d",&b[i]);

for(i=0;i<5;i++)

c[i]=a[i]-b[i];

printf("subtraction");

for(i=0;i<5;i++)

printf(" %d ",c[i]);

getch();

}

Output:

enter value for array a: 7 8 9 4 5

enter value for array b: 4 5 6 1 2

subtraction 3 3 3 3 3

#include<stdio.h>

#include<conio.h>

void main()

{

int a[3][2],b[3][2],c[3][2],i,j;

clrscr();

printf("enter value for 1 matrix: ");

for(i=0;i<3;i++)

{

for(j=0;j<2;j++)

scanf("%d",&a[i][j]);

}

printf("enter value for 2 matrix: ");

for(i=0;i<3;i++)

{

for(j=0;j<2;j++)

scanf("%d",&b[i][j]);

}

for(i=0;i<3;i++)

{

for(j=0;j<2;j++)

c[i][j]=a[i][j]*b[i][j];

}

printf("matrix is\n");

for(i=0;i<3;i++)

{

for(j=0;j<2;j++)

{

printf(" %d ",c[i][j]);

}

printf("\n");

}

getch();

}

Output:

enter value for 1 matrix: 7 8 9 4 5 6

enter value for 2 matrix: 3 2 1 2 5 6

matrix is

21  16

9   8

25  36

#include<stdio.h>

#include<conio.h>

void main()

{

int a[3][2],b[2][3],i,j;

clrscr();

printf("Enter value for matrix: ");

for(i=0;i<3;i++)

{

for(j=0;j<2;j++)

scanf("%d",&a[i][j]);

}

printf("Matrix:\n");

for(i=0;i<3;i++)

{

for(j=0;j<2;j++)

printf(" %d ",a[i][j]);

printf("\n");

}

for(i=0;i<3;i++)

{

for(j=0;j<2;j++)

b[j][i]=a[i][j];

}

printf("Transpose matrix:\n");

for(i=0;i<2;i++)

{

for(j=0;j<3;j++)

printf(" %d ",b[i][j]);

printf("\n");

}

getch();

}

Output:

Enter value for matrix: 4 5 6 1 2 3

Matrix:

4 5

6 1

2 3

Transpose matrix:

4 6 2

5 1 3

#include<stdio.h>

#include<conio.h>

void main()

{

int max,i,*a[5];

clrscr();

printf("enter element for the array: ");

for(i=0;i<5;i++)

scanf("%d",&*a[i]);

max=*a[0];

for(i=1;i<5;i++)

{

if(max<*a[i])

max=*a[i];

}

printf("maximum no= %d",max);

getch();

}

Output:

enter elements for array: 5 4 7 1 2

maximum no= 7

#include<stdio.h>

#include<conio.h>

void main()

{

char a[50];

clrscr();

printf("enter any string: ");

gets(a);

puts(a);

getch();

}

Output:

enter any string: hi everyone

hi everyone

#include<stdio.h>

#include<conio.h>

void main()

{

int rev(int); int r,a;

clrscr();

printf("enter any no: ");

scanf("%d",&a);

r=rev(a);

printf("square is : %d",r);

getch();

}

int rev(int x)

{

return(x*x);

}

Output:

enter any no: 5

square is : 25

#include<stdio.h>

#include<conio.h>

void main()

{

void swap(int,int);

int a,b,r;

clrscr();

printf("enter value for a&b: ");

scanf("%d%d",&a,&b);

swap(a,b);

getch();

}

void swap(int a,int b)

{

int temp; temp=a; a=b; b=temp;

printf("after swapping the value for a & b is : %d %d",a,b);

}

Output:

enter value for a&b: 4 5

after swapping the value for a & b : 5 4

#include<stdio.h>

#include<conio.h>

void main()

{

int a,f;

int fact(int);

clrscr();

printf("enter a no: ");

scanf("%d",&a);

f=fact(a);

printf("factorial= %d",f);

getch();

}

int fact(int x)

{

int fac=1,i;

for(i=x;i>=1;i--)

fac=fac*i;

return(fac);

}

Output:

enter a no: 5

factorial = 120

#include<stdio.h>

#include<conio.h>

void main()

{

void table();

clrscr();

table();

getch();

}

void table()

{

int n,i,r;

printf("enter a no to know table: ");

scanf("%d",&n);

for(i=1;i<=10;i++)

{

r=n*i;

printf("%d*%d=%d\n",n,i,r);

}

}

Output:

enter a no to know table: 2

2*1=2

2*2=4

2*3=6

2*4=8

2*5=10

2*6=12

2*7=14

2*8=16

2*9=18

2*10=20

#include<stdio.h>

#include<conio.h>

void main()

{

int a,b,swap();

clrscr();

a=5; b=10;

printf("value of a=%d & value of b=%d before swap ",a,b);

swap(a,b);

printf("\nvalue of a =%d & b=%d after swap",a,b);

getch();

}

int swap(int x,int y)

{

int temp; temp=x; x=y; y=temp;

}

Output:

value of a=5 & value of b=10 before swap

value of a=5 & b=10 after swap

#include<stdio.h>

#include<conio.h>

void main()

{

int a,b,*aa,*bb,swap();

clrscr();

a=5; b=10;

aa=&a; bb=&b;

printf("value of a= %d & value of b=%d before swap",a,b);

swap(aa,bb);

printf("\nvalue of a=%d & b=%d after swap",a,b);

getch();

}

int swap(int *x,int *y)

{

int temp; temp=*x;

*x=*y;

*y=temp;

}

Output:

value of a= 5 & value of b=10 before swap

value of a=10 & b=5 after swap

#include<stdio.h>

#include<conio.h>

void main()

{

void max();

clrscr();

max();

getch();

}

void max()

{

int a[5],max,n,i;

printf("How many no’s you want to enter: ");

scanf("%d",&n);

printf("Enter element for the array: ");

for(i=0;i<n;i++)

scanf("%d",&a[i]);

max=a[0];

for(i=1;i<5;i++)

{

if(max<a[i])

max=a[i];

}

printf("maximum no= %d",max);

}

Output:

How many nos you want to enter: 4

Enter element for array: 4 5 6 1

maximum no: 6

#include<stdio.h>

#include<conio.h>

void main()

{

int n;

clrscr();

printf("enter number: ");

scanf("%d",&n);

if(n<0)

printf("invalid number");

else

printf("%d!=%d",n,fact(n));

getch();

}

int fact(int x)

{

if(x==0)

return 1;

else

return(x*fact(x-1));

}

Output:

enter number: 5

5! =120

#include<stdio.h>

#include<conio.h>

void main()

{

char s1[20],s2[20];

clrscr();

printf("enter a string: ");

scanf("%s",s1);

strcpy(s2,s1);

strrev(s2);

if(strcmp(s1,s2)==0)

printf("string is a palindrome");

else

printf("not a palindrome string");

getch();

}

Output:

enter a string: abc

not a palindrome string

#include<stdio.h>

#include<conio.h>

void main()

{

file *fp,*fp1; char c;

clrscr();

fp=fopen("test.c","w");

printf("\nenter the contents for file1(#.end)\n");

c=getchar();

while(c!='#')

{

fputc(c,fp);

c=getchar();

}

rewind(fp);

fp=fopen("test.c","r");

fp1=fopen("tes.c","w");

c=fgetc(fp);

while(c!=eof)

{

fputc(c,fp);

c=fgetc(fp);

}

fclose(fp);

fclose(fp1);

fp1=fopen("tes.c","r");

c=fgetc(fp1);

printf("\nthe contents in file 2\n");

while(c!=eof)

{

putchar(c);

c=fgetc(fp1);

}

fclose(fp1);

getch();

}

Output:

enter the contents of file1(#-end) good morning#

the contents of file2 good morning

#include<stdio.h>

#include<conio.h>

void main()

{

int a[50],b[50],n1,n2,i,x;

clrscr();

printf("enter the number of elements in the first array");

scanf("%d",&n1);

printf("enter the elements\n");

for(i=0;i<n1;i++)

{

printf("enter a[%d]",i+1);

scanf("%d",&a[i]);

}

printf("enter the number of elements in the second array");

scanf("%d",&n2);

printf("enter the elements\n");

for(i=0;i<n2;i++)

{

printf("enter b[%d]",i+1);

scanf("%d",&b[i]);

}

for(x=0;x<n1;x++)

{

for(i=0;i<n2;i++)

{

if(b[i]==a[x])

{

b[i]=' ';

}

}

}

for(i=0;i<n1;i++)

{

printf("%d",a[i]);

}

for(i=0;i<n2;i++)

{

if(b[i]=='';)

continue;

else

printf("%d",b[i]);

}

getch();

}

Output:

Enter the number of elements in the first array 3

Enter the elements 3 5 7

Enter the number of elements in the first array 3

Enter the elements 2 5 9

3 5 7 2 9

#include<stdio.h>

#include<conio.h>

#include<stdlib.h>

#include<string.h>

#include<ctype.h>

void main()

{

char s[100];

int vow=0,cons=0,spc=0,punc=0,l,i;

clrscr();

printf("enter the statement\n");

gets(s);

l=strlen(s);

for(i=0;i<l;i++)

{

if(isalpha(s[i]))

{

if(s[i]=='a'||s[i]=='e'||s[i]=='i'||s[i]=='o'||s[i]=='u')

{

vow++;

}

else

{

cons++;

}

}

if(isspace(s[i])

{

spc++;

}

if(ispunct(s[i]))

{

punc++;

}

}

printf("\nno.of words=%d",spc+1);

printf("\nno.of vowels=%d",vow);

printf("\nno.of consonants=%d",cons);

printf("\nno.of space=%d",spc);

printf("\nno.on special characters=%d",punc);

getch();

}

Output:

Enter the statement

*Nothing is impossible in the world. No.of words=6

No.of vowels=10 No.of consonants=19 No.of space=5

No.of special characters=1

#include<stdio.h>

#include<conio.h>

void main()

{

Enum month(Jan, Feb, Mar, Apr, May, June, July, Aug,Sep, Oct, Nov, Dec)

clrscr();

printf("Jan=%d", Jan);

printf("Feb=%d", Feb);

printf("June=%d", June);

printf("Dec=%d", Dec);

}

Output:

Jan = 0 Feb = 1 June = 5 Dec = 11

#include <stdio.h>
int main()
{
    int arr[2][2], n;
    // enter the scalar value
    scanf("%d", &n);

    // input the matrix values
    for(int i = 0; i < 2; i++) {
        for(int j = 0; j < 2; j++){
            scanf("%d", &arr[i][j]);
        }  
    }
    // multiply every value of matrix with scalar value
    for(int i = 0; i < 2; i++) {
        for(int j = 0; j < 2; j++){
            arr[i][j] = arr[i][j] * n;
        }
    }

    // print the updated matrix values
    for(int i = 0; i < 2; i++) {
        for(int j = 0; j < 2; j++){
            printf("%d ", arr[i][j]);
        }
        printf("\n");
    }
        
    return 0;
}