Write a C program to read elements in a matrix and find the sum of elements of each row and columns of matrix. C program to calculate sum of rows and columns of matrix.

1 2 3

4 5 6

7 8 9

Output:

Sum of row 1 = 6

Sum of row 2 = 15

...

...

Sum of column 3 = 18

Sum of rows and columns of a matrix can be defined as

Happy coding ;)

**Example:**If elements of matrix are:1 2 3

4 5 6

7 8 9

Output:

Sum of row 1 = 6

Sum of row 2 = 15

...

...

Sum of column 3 = 18

### Required knowledge:

Basic C programming, For loop, Array, MatrixSum of rows and columns of a matrix can be defined as

### Program:

/** * C program to find sum of elements of rows and columns of matrix */ #include <stdio.h> int main() { int A[3][3]; int row, col, sum = 0; /* * Reads elements in matrix from user */ printf("Enter elements in matrix of size 3x3: \n"); for(row=0; row<3; row++) { for(col=0; col<3; col++) { scanf("%d", &A[row][col]); } } /* * Finds the sum of elements of each row of matrix */ for(row=0; row<3; row++) { sum = 0; for(col=0; col<3; col++) { sum += A[row][col]; } printf("Sum of elements of Row %d = %d\n", row+1, sum); } /* * Finds the sum of elements of each columns of matrix */ for(row=0; row<3; row++) { sum = 0; for(col=0; col<3; col++) { sum += A[col][row]; } printf("Sum of elements of Column %d = %d\n", row+1, sum); } return 0; }

Output

Enter elements in matrix of size 3x3:

1 2 3

4 5 6

7 8 9

Sum of elements of Row 1 = 6

Sum of elements of Row 2 = 15

Sum of elements of Row 3 = 24

Sum of elements of Column 1 = 12

Sum of elements of Column 2 = 15

Sum of elements of Column 3 = 18

1 2 3

4 5 6

7 8 9

Sum of elements of Row 1 = 6

Sum of elements of Row 2 = 15

Sum of elements of Row 3 = 24

Sum of elements of Column 1 = 12

Sum of elements of Column 2 = 15

Sum of elements of Column 3 = 18

Happy coding ;)

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