 # C Programming Code Examples

## C > Arrays and Matrices Code Examples

### C program to subtract two matrices

``` C program to subtract two matrices Write a C program to read elements in two matrices and find the difference of two matrices. Program to subtract two matrices in C. Logic to subtract two matrices in C programming. Matrix Subtraction Elements of two matrices can only be subtracted if and only if both matrices are of same size. Matrix subtraction is done element wise (entry wise) i.e. Difference of two matrices A and B of size mXn is defined by A - B = Aij - Bij (Where 1 ? i ? m and 1 ? j ? n) /* C program to find difference of two matrices of size 3x3 */ #include <stdio.h> #define SIZE 3 // Size of the matrix int main() { int A[SIZE][SIZE]; // Matrix 1 int B[SIZE][SIZE]; // Matrix 2 int C[SIZE][SIZE]; // Resultant matrix int row, col; /* Input elements in first matrix */ printf("Enter elements in matrix A of size 3x3: \n"); for(row=0; row<SIZE; row++) { for(col=0; col<SIZE; col++) { scanf("%d", &A[row][col]); } } /* Input elements in second matrix */ printf("\nEnter elements in matrix B of size 3x3: \n"); for(row=0; row<SIZE; row++) { for(col=0; col<SIZE; col++) { scanf("%d", &B[row][col]); } } /* Subtract both matrices and store the result in matrix C */ for(row=0; row<SIZE; row++) { for(col=0; col<SIZE; col++) { /* Cij = Aij - Bij */ C[row][col] = A[row][col] - B[row][col]; } } /* Print difference of both matrices A and B */ printf("\nDifference of two matrices A-B = \n"); for(row=0; row<SIZE; row++) { for(col=0; col<SIZE; col++) { printf("%d ", C[row][col]); } printf("\n"); } return 0; } ``` 