online compiler and debugger for c/c++

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#include<stdio.h> #define ROW 3 #define COL 3 int main() { int First[3][3],Second[3][3],Result[3][3]; int m1,n1,m2,n2,i,j; printf("Enter no of row and column for 1st matrix\n"); scanf("%d%d",&m1,&n1); printf("Enter no of row and column for 2nd matrix\n"); scanf("%d%d",&m2,&n2); //check if multiplication is possible, 1st matrix rows must be equal to //Second matrix columns if(n1==m2) { printf("Enter First matrix\n"); matrixInput(First); printf("\nEnter Second matrix\n"); matrixInput(Second); matrixMultiply(First,Second,Result); printf("Product of entered matrices :-\n"); //print the resultant matrices for(i=0;i<m1;i++) { for(j=0;j<n2;j++) printf("%d\t",*(*(Result + i) + j)); printf("\n"); } } else { printf("Sorry ! Multiplication is not possible"); } return 0; } //Get matrix data void matrixInput(int mat[][COL]) { int row, col; for (row = 0; row < ROW; row++) { for (col = 0; col < COL; col++) { scanf("%d", (*(mat + row) + col)); } } } //Function to multiply Matrices mat1 * mat2 = res void matrixMultiply(int mat1[][COL], int mat2[][COL], int res[][COL]) { int row, col, i; int sum; for (row = 0; row < ROW; row++) { for (col = 0; col < COL; col++) { sum = 0; // find the sum of product of each elements of row for first matirx // and columsn of second for (i = 0; i < COL; i++) { sum += (*(*(mat1 + row) + i)) * (*(*(mat2 + i) + col)); } //save sum in resultant matrix *(*(res + row) + col) = sum; } } }

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