Re: Beginner in C++ need help

#include "stdio.h"
#include "assert.h"
int main()
{
int a,b,loop,result,ret;

        printf("Base:");
        ret=scanf("%d",&a);
        printf("power:");
        scanf("%d",&b);
if(ret==0)
{ //could not read from std input
     fprintf(stderr,"Invalid input\n");
}
else if(ret==EOF)
{ //read from file and EOF reached
     fprintf(stderr,"EOF reached\n");//or silentlty return
     return -1;
}
else
{ //read is success
     assert(ret==1);
     if(a<0)
     { // user entered negative value
           fprintf(stderr,"No negative value please\n");
           return -1;
     }
}

        result=1;
        for (loop=1; loop<=b; loop++)
        {
            result=result*a;
        }
        printf("Base: %d \n", a);
        printf("power:%d \n", b);
        printf("result:%d \n",result);

return 0;
}

I made some changes to my code.
The program works fine, but just unable to continue testing after I
press any key, the window closes.