Code not running fully in VsCode but working in online compilers - c

Question

This is the code i am talking about. It checks if a matrix is sparse or not . If it is then it changes it to sparse form and transposes it. When I run it with Vscode it runs and displays till it is sparse matrix but doesn't show its sparse form and transpose form but on online compiler it runs successfully till the end.
#include <stdio.h>
int checksparse();
int changematrix();
int main()
{
int a[100][100];
int i, j, r, c;
printf("Enter number of rows and columns in the matrix\n");
scanf("%d%d", &r, &c);
printf("\nEnter the elements in the matrix");
for (i = 0; i < r; i++)
{
for (j = 0; j < c; j++)
{
printf("\na[%d][%d] = ", i, j);
scanf("%d", &a[i][j]);
}
}
int check = checksparse(a, r, c);
if (check == 1)
{
printf("\nIts a sparse matrix\n");
changematrix(a, r, c);
}
else if (check == 0)
{
printf("\nIts not a sparse matrix");
}
return 0;
}
int checksparse(int array[100][100], int r, int c)
{
int counter = 0, flag = 1;
for (int i = 0; i < r; i++)
{
for (int j = 0; j < c; j++)
{
if (array[i][j] == 0)
counter++;
}
}
if (counter > ((r * c) / 2))
{
return flag;
}
else
{
flag = 0;
return flag;
}
}
int changematrix(int array[100][100], int r, int c)
{
int b[100][100], temp, counter = 0;
for (int i = 0; i < r; i++)
{
for (int j = 0; j < c; j++)
{
if (array[i][j] != 0)
{
b[temp][0] = i;
b[temp][1] = j;
b[temp][2] = array[i][j];
temp++;
counter++;
}
}
}
printf("\nSparse Matrix : \n");
for (int i = 0; i < counter; i++)
{
for (int j = 0; j < 3; j++)
{
printf("%d ", b[i][j]);
printf("\t");
}
printf("\n");
}
printf("\nTranspose of Sparse Matrix : \n");
for (int i = 0; i < 3; i++)
{
for (int j = 0; j < counter; j++)
{
printf("%d ", b[j][i]);
printf("\t");
}
printf("\n");
}
return 0;
}