Hello (again) guys! Since I finished my last project (thanks to you, who helped me!) I started a new one and I'm stuck again ) The perks of being a newbie...

Here is what I want to do:

1.Insert number of rows & columns for matrix A

2.Check If the no. of rows and columns are higher than 10, 10 being the maximum allowed number of rows/columns.

3.Insert values for each position

4.Idem 1&2&3 for matrix B

5.Check if the rows of first matrix(A) equals the columns of the second matrix(B) -> If they are equal proceed. If not "Restart the program"

Question here:Is there any way to automatically start again the "program" if the rows(A) and columns(B) are not equal ? Like a goto ?

6.If they are equal set no. of rows for matrix C (the product matrix from A*B) as the no. of rows for matrix A, same for columns for matrix C from matrix B.

2nd Question here:I don't know how to write the rule for the calculation... I thought of something like C[i][j] = A[i][j] * B[i][j] + A[i+1][j] * B[i][j+1].

But this way it won't stop (I think) when it reaches the last position in the row/column :-/

Here is the CODE, thanks for being an wonderful community and for the help!

Code:#define _CRT_SECURE_NO_WARNINGS #include <stdio.h> #include <stdlib.h> #include <conio.h> int main() { int A[10][10],B[10][10],C[10][10],RowA,ColA,RowB,ColB,i,j,RowC,ColC; printf ("Enter the number of rows for the first matrix: "); scanf ("%d", &RowA); if ( RowA > 10 ) { printf ("The value is too hight, the maximum size is 10!\nPlease insert new value: "); scanf ("%d", &RowA); } while ( RowA > 10 ); printf ("Enter the number of columns for the first matrix: "); scanf ("%d", &ColA); if ( ColA > 10 ) { printf ("The value is too hight, the maximum size is 10!\nPlease insert new value: "); scanf ("%d", &ColA); } while ( ColA > 10 ); for (i=0 ; i<RowA ; i++) for (j=0 ; j<ColA ; j++) { printf ("Enter the value for A[%d][%d]: ", i+1, j+1); scanf ("%d", &A[i][j]); } printf ("Enter the number of rows for the second matrix: "); scanf ("%d", &RowB); if ( RowB > 10 ) { printf ("The value is too hight, the maximum size is 10!\nPlease insert new value: "); scanf ("%d", &RowB); } while ( RowB > 10 ); printf ("Enter the number of columns for the second matrix: "); scanf ("%d", &ColB); if ( ColB > 10 ) { printf ("The value is too hight, the maximum size is 10!\nPlease insert new value: "); scanf ("%d", &ColB); } while ( ColB > 10 ); for (i=0 ; i<RowB ; i++) for (j=0 ; j<ColB ; j++) { printf ("Enter the value for B[%d][%d]: ", i+1, j+1); scanf ("%d", &B[i][j]); } if ( RowA != ColB ) { printf ("The number of rows for matrix A must equal de number of columns for matrix B!\nPlease restart the program!\n"); } else { RowC = RowA; ColC = ColB; for (i=0 ; i<RowC ; i++); { for (j=0 ; j<ColC ; j++); } } system ("pause"); }