Use same name twice for a variable and for a pointer(c programming)

Question

#include <stdio.h>

void swap(int *i, int *j)
{
    int t;
    t = *i;
    *i = *j;
    *j = t;
}

void main()
{
    int i,j;
    i=5;
    j=10;
    printf("%d %d\n",i,j);
    swap(&i,&j);
    printf("%d %d\n",i,j);

}

Will there be any problem with this small programme which swaps two variables because i,j inside the function work as pointers and inside main contain numbers? should i have used another letters, e.g. a,b instead of i,j inside main?

Answer 1

Variables are local to the scope they are defined, so no this should not be a problem at all.