multiplying matricies

so I think everything is good in my code, except when i print I get a few funny numbers. I think because the numbers are too big to be integers. How do I effectively convert them to show up properly in the code?

Code:

#include <stdio.h>
#include "max_sizes_b.h"

int main (void) {
	
int A[MAX_L][MAX_N], B[MAX_M][MAX_N], C[MAX_L][MAX_N], i, j, l, m, n;

scanf("%d%d%d", &l, &m, &n);

for (i = 0; i < l; i++)
  for (j = 0; j < m; j++)
    scanf("%d ", &A[i][j]);

for (i = 0; i < m; i++)
  for (j = 0; j < n; j++)
    scanf("%d ", &B[i][j]);
    
sumofarrays(A, B, C, l, m, n);

for (i = 0; i < n; ++i) {
  for (j = 0; j < n; j++)
    printf("%4d ", C[i][j]);
    printf("\n");
} 

return 0;

}

Code:

#include <stdio.h>
#include "max_sizes_b.h"

void sumofarrays(int A[][MAX_M], int B[][MAX_N], int C[][MAX_N], int l, int m, int n) {
	
int i, j, k;

for (i = 0; i < l; ++i)
  for (j = 0; j < m; ++j)
    {
		C[i][j] = 0.0;
		for (k = 0; k < m; ++k)
		C[i][j] = C[i][j] + A[i][k] * B[k][j];
	}
}

no, wait, I think something is wrong with my code......let me work on it some more

ok i think i got it. this is right? right?

Code:

#include <stdio.h>
#include "max_sizes_b.h"

int main (void) {
	
int A[MAX_L][MAX_N], B[MAX_M][MAX_N], C[MAX_L][MAX_N], i, j, l, m, n;

scanf("%d%d%d", &l, &m, &n);

for (i = 0; i < l; i++)
  for (j = 0; j < m; j++)
    scanf("%d ", &A[i][j]);

for (i = 0; i < m; i++)
  for (j = 0; j < n; j++)
    scanf("%d ", &B[i][j]);
    
sumofarrays(A, B, C, l, m, n);

for (i = 0; i < l; ++i) {
  for (j = 0; j < n; j++)
    printf("%4d ", C[i][j]);
    printf("\n");
} 

return 0;

}

Code:

#include <stdio.h>
#include "max_sizes_b.h"

void sumofarrays(int A[][MAX_M], int B[][MAX_N], int C[][MAX_N], int l, int m, int n) {
	
int i, j, k;

for (i = 0; i < l; ++i)
  for (j = 0; j < n; ++j)
    {
		C[i][j] = 0.0;
		for (k = 0; k < m; ++k)
		C[i][j] = C[i][j] + A[i][k] * B[k][j];
	}
}