hello,

Code:#include <conio.h> #include <time.h> #include <stdlib.h> #include <ctype.h> int main() { //freopen("conventionInput.txt","r",stdin); long long m1[5][100],i,j,k,m2[100][5],mult[100][100],r1,c1,r2,c2; char Manual = 'N'; printf("Enter Matrix Input Manually? (Y/N)\n"); Manual = getchar(); Manual = toupper(Manual); printf("Enter variable Y MIN 32 MAX 100\n"); scanf("%lld",&c1); r2 = c1; r1 = 5; c2 = 5; /* initialize random seed: */ srand ( time(NULL) ); /* generate secret number: */ if(r2==c1) { printf("Enter rows and columns of First matrix \n"); printf("Row wise\n"); for(i=0;i<r1;i++) { for(j=0;j<c1;j++){ if(Manual == 'Y') scanf("%lld",&m1[i][j]); else m1[i][j] = rand() % 10 + 1; } } printf("You have entered the first matrix as follows:\n"); for(i=0;i<r1;i++) { for(j=0;j<c1;j++) printf("%lld\t",m1[i][j]); printf("\n"); } printf("Enter rows and columns of Second matrix \n"); printf("Again row wise\n"); for(i=0;i<r2;i++) { for(j=0;j<c2;j++){ if(Manual == 'Y') scanf("%lld",&m2[i][j]); else m2[i][j] = rand() % 10 + 1; } } printf("You have entered the second matrix as follows:\n"); for(i=0;i<r2;i++) { for(j=0;j<c2;j++) printf("%lld\t",m2[i][j]); printf("\n"); } printf("Now we multiply both the above matrix. Clock Time will start here \n"); printf("The result of the multiplication is as follows:\n"); //a11xA11+a12xA21+a13xA31 a11xA12+a12xA22+a13xA32 a11xA13+a12xA23+a13xA33 clock_t start = clock(); for(i=0;i<r1;i++) { for(j=0;j<c2;j++) { mult[i][j]=0; for(k=0;k<r1;k++) { mult[i][j]+=m1[i][k]*m2[k][j]; mult[0][0]=m1[0][0]*m2[0][0]+m1[0][1]*m2[1][0]+m1[0][2]*m2[2][0]; } printf("%lld\t",mult[i][j]); } printf("\n"); } printf("Time elapsed: %f ms \n", ((double)clock() - start) / CLOCKS_PER_SEC); getch(); } else { printf("Matrix multiplication cannot be done"); } }

My problem now is this matrix multiplication coding not give the actual result after..can u check which part that cause this problem..

tq.