# Input numbers in 2d array and check sum of each row is same or not in C

###### Two Dimensional Array - Question 8

In this question, we will see how to input numbers in a 3X3 integer matrix (2d array) and check whether the sum of each row is same or not in C programming. To know more about two dimensional array click on the two dimensional array lesson.

**Q8)** Write a program in C to input numbers in a 3X3 integer matrix (2d array) and check whether the sum of each row is same or not.

#### Program

```
#include <stdio.h>
#include <conio.h>
int main()
{
int a[3][3], r,c,rs,frs,x=0;
printf("Enter 9 numbers\n");
for(r=0; r<3; r++)
{
for(c=0; c<3; c++)
{
scanf("%d",&a[r][c]);
}
}
for(r=0; r<3; r++)
{
rs=0;
for(c=0; c<3; c++)
{
printf("%d ",a[r][c]);
rs=rs+a[r][c];
}
printf(" Row sum = %d\n",rs);
if(r==0)
{
frs=rs; // store the first row sum in frs variable
}
else if(frs!=rs)
{
x=1;
}
}
if(x==0)
{
printf("Sum of each row is same");
}
else
{
printf("Sum of each row is not same");
}
return 0;
}
```

#### Output

Enter 9 numbers 5 5 5 5 5 5 5 5 5 5 5 5 Row sum = 15 5 5 5 Row sum = 15 5 5 5 Row sum = 15 Sum of each row is same