C Exercises: Find the sum of rows an columns of a Matrix
C Array: Exercise-25 with Solution
Write a program in C to find the sum of rows and columns of a matrix.
Pictorial Presentation:

Sample Solution:
C Code:
#include <stdio.h>
void main()
{
int i,j,k,arr1[10][10],rsum[10],csum[10],n;
printf("\n\nFind the sum of rows an columns of a Matrix:\n");
printf("-------------------------------------------\n");
printf("Input the size of the square matrix : ");
scanf("%d", &n);
printf("Input elements in the first matrix :\n");
for(i=0;i<n;i++)
{
for(j=0;j<n;j++)
{
printf("element - [%d],[%d] : ",i,j);
scanf("%d",&arr1[i][j]);
}
}
printf("The matrix is :\n");
for(i=0;i<n;i++)
{
for(j=0;j<n ;j++)
printf("% 4d",arr1[i][j]);
printf("\n");
}
/* Sum of rows */
for(i=0;i<n;i++)
{
rsum[i]=0;
for(j=0;j<n;j++)
rsum[i]=rsum[i]+arr1[i][j];
}
/* Sum of Column */
for(i=0;i<n;i++)
{
csum[i]=0;
for(j=0;j<n;j++)
csum[i]=csum[i]+arr1[j][i];
}
printf("The sum or rows and columns of the matrix is :\n");
for(i=0;i<n;i++)
{
for(j=0;j<n;j++)
printf("% 4d",arr1[i][j]);
printf("% 8d",rsum[i]);
printf("\n");
}
printf("\n");
for(j=0;j<n;j++)
{
printf("% 4d",csum[j]);
}
printf("\n\n");
}
Sample Output:
Find the sum of rows an columns of a Matrix: ------------------------------------------- Input the size of the square matrix : 2 Input elements in the first matrix : element - [0],[0] : 5 element - [0],[1] : 6 element - [1],[0] : 7 element - [1],[1] : 8 The matrix is : 5 6 7 8 The sum or rows and columns of the matrix is : 5 6 11 7 8 15 12 14
Flowchart:

C Programming Code Editor:
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Previous: Write a program in C to find sum of left diagonals of a matrix.
Next: Write a program in C to print or display the lower triangular of a given matrix.
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C Programming: Tips of the Day
C Programming - What is the argument for printf that formats a long?
Put an l (lowercased letter L) directly before the specifier.
unsigned long n; long m; printf("%lu %ld", n, m);
Ref : https://bit.ly/3dIwfkP
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