program window closes to quick to view any output

[Sirnoobalot]

Hello, I know there has been topics on this before and I have read them through, and tried the suggestions that people have made, but for whatever reason I can't get them to work when I try it. I have tried adding system("PAUSE"), getchar(), _getchar(), and std::cin >>. I don't know if its the compiler that I am using (Devc++) or what, but nothing seems to ever work. As my name suggest, I am totally new at this, so if you could be as specific as possible, such as where exactly to insert anything that I am missing, I would trully appreciate it.

Thanks!

Here is an example of a sample program I am trying to view...

#include <stdio.h>

int main()
{
char name[20];
char color[20];

printf("What is your name?");
scanf("%s", name);
printf("What is your favorite color?");
scanf("%s", color);
printf("%s's favorite color is %s\n",name,color);

return(0);

}

[Lv0f92yv]

You could try a cin.ignore();, then a getchar(); call BEFORE the return statement of your program. If you're program 'returns' before any of those calls, it won't matter what you put there.

#include <stdio.h>

int main()
{
char name[20];
char color[20];

printf("What is your name?");
scanf("%s", name);
printf("What is your favorite color?");
scanf("%s", color);
printf("%s's favorite color is %s\n",name,color);

cin.ignore();
getchar();
getchar();
return(0);

}

I would expect this to work.

[Athar]

See the sticky "Console Closing Down".

[Sirnoobalot]

Thanks Desh,

I tried doing what you recommended and it didn't work. Here is what I wrote out.

#include <stdio.h>

int main()
{
char name[20];
char color[20];

printf("What is your name?");
scanf("%s", name);
printf("What is your favorite color?");
scanf("%s", color);
printf("%s's favorite color is %s\n",name,color);

cin.ignore();
getchar();
getchar();
return(0);

}


And this was the error message that I got.

In function 'int main()'
13 'cin' undeclared (first use this function)
(Each undeclared identifier is reported only once for each function it appears in.)

I'm not exactly sure what it means.

[TheTSPSolver]

Hi Sirnoobalot,

First suggesstion, you should write the Code in code tags. It makes it easier for other to read your code.

As for your problem, you should try std::cin.ignore();.

Try the following

#include <stdio.h>
#include <iostream>

int main()
{
	char name[20];	
	char color[20];

	printf("What is your name?\n");
	scanf("%s", name);
	printf("What is your favorite color?\n");
	scanf("%s", color);
	printf("%s's favorite color is %s\n",name,color);

	getchar();
	return(0);
}

[Albatross]

Then that makes the iostream include redundant.

Ideally, what you'd do is

#include <limits>
std::cin.ignore( std::numeric_limits<std::streamsize>::max(), '\n' );

-Albatross

[Sirnoobalot]

Thanks for the knowledge everyone. I appreciate it. I was able to get the program to stop.....sorta. The getchar() function seems to work sometimes, but not all the time. I'm curious why this is. When I added it in to the original program I posted about, I couldn't get the program to pause. However when I reached another exercise in the book that I'm reading, I threw it in there just before the return(0) function and it worked.

I'm baffled why it works for one and not the other????

Here is the program that I was able to pause...

#include <stdio.h>

int main()
{
char jerk[20];

printf("Name some jerk you know:");
gets(jerk);
printf("Yeah, I think %s is a jerk, too.\n",jerk);
getchar();
return(0);
}

[Albatross]

I wonder why people are using gets() when scanf() is so much safer.

Oh, and it's because scanf leaves the newline in the stream, which getchar() reads.

-Albatross