Re: Beginner in C++ need help

From:

Alan Johnson <awjcs@yahoo.com>

Newsgroups:

comp.lang.c++

Date:

Sat, 03 Mar 2007 00:21:31 -0800

Message-ID:

<27ednfa43M-RrXTYnZ2dnUVZ_sWdnZ2d@comcast.com>

jasson118@hotmail.com wrote:

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

Everything from here ....

        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);

down to here needs to be inside an "infinite" loop. You typically see
this done as John Harrison mentioned earlier in the thread:

for (;;)
{
// Body of the loop
}

The reason a for loop is used for that is because some compilers issue a
warning when the condition of a while loop is always true.

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.

On an unrelated note, this thread is a perfect example of the correct
way to ask for homework help. Usenet needs "sticky" posts. :-)

--
Alan Johnson