What is the error in this program

Question

#include <stdio.h>

int main() {
int m,n,s=0;
int a[1][7],b[7][1],r[1][1];
printf ("Enter the first matrix\n");

printf ("how many number you want in rows and coloumns \n");
for(int i=0;i<1;i++)
{
for(int j=0;j<7;j++)
{ printf ("Enter the coloums and rows");
scanf("%d",a[i][j]);
}
}
printf ("Enter the second matrix\n");
printf ("how many number you want in rows amd coloumns \n");
for(int i=0;i<1;i++)
{
for(int j=0;j<7;j++)
{ printf ("Enter the coloumns and rows");
scanf("%d",b[i][j]);
}
}
for(int i=0;i<1;i++)
{
for(int j=0;j<7;j++)
{
for(int e=0;e<7;e++)
{
s +=a[i][e]*b[e][j];
r[i][j]=s;
s=0;
}
}
}
for(int i=0;i<1;i++)
{
for(int j=0;j<7;j++)
{
printf ("Your matrix multiplication is %d\n",r[i][j]);
}
}
return 0;
}

Answer 1

Put the code in Code Playground and edit the question, using "+" button to include a link to the code.
This allows you and everyone willing to help to see the error, then start discussing solutions.