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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