[ZeroKoolNess1]

I am having problems with Project builder.


NOTE:
I am only doing work with the C++ tool, and just began programming

When it hit Build and Run

The screen does not display my printf.

After I enter two number it displays it but not before. Why does it do that?

here is the code


#include <stdio.h>

int main (void)
{
/* Variables */

int num1, num2, sumnum;


/* Statements */

printf("Please input two whole numbers: \n");

scanf("%d %d" , &num1, & num2);

sumnum = num1 + num2;

printf("The sum is %d", sumnum);

return 0;
}


Here is the result: The two scan int had to be entered before the program would run the first printf. WHY? I want the program to printf that i must enter the numbers before I have to.


quote:
1
2
Please input two whole numbers:
The sum is 3
Test has exited with status 0.

[iMacfan]

Maybe you should use the cout<< function. This works for me. I'm also a newbie, and so if someone could say whether printf works in C++, and if so if the implementation is different, I'd be really pleased.

Thanks,

David

[ranga]

Hi,

Try replacing:

printf("Please input two whole numbers: \n");

with:

fprintf(stdout,"Please input two whole numbers: \n");
fflush(stdout);

This should solve your problem. By default output (STDOUT) is buffered and won't be displayed until the buffer is full. If you want output to be displayed immediately you need to flush the buffer manually.

--ranga

[ZeroKoolNess1]

Thanks ranga

works great now