times table using for loop

#include<stdio.h>
int main()
{
    int n,i;

    printf("please enter your times table no: \n",n);
        scanf("%d",&n);

    printf("please enter beginning number of  times table: \n",i);
        scanf("%d",&i);

    for(;n<=12;n=n+1){
        for(;i<=13;i=i+1){
            printf("%d X %d =%d\n",n,i,n*i);
        }
    }
    return 0;
}