how to stop this program?

/* This is a program intended to copy its input to its output, replacing
each string of one or more blanks by a single blank.
My question is that how can I terminate the program in VC instead of running
it without stop?*/

#include <stdio.h>
#define NONBLANK 'a'

void main (void)
{
char i=getchar();
int lastc=NONBLANK;
while (i!=EOF){
if (i!=' ')
putchar(i);
if (i==' ')
if (lastc!=' ')
putchar(i);
lastc=i;
}
}

You should build in a statement which causes the loop to stop, in the current situation, the value of i doesn't ever change in the loop. So i will never be equal to EOF.

You should put

i=getchar();

somewhere in the loop.

To kill the process running you could use the task manager, CTRL-ALT-DEL.

Quote:

---

Originally posted by Shiro
So i will never be equal to EOF.

---

EOF is an int, i has been defined as a char. oops :D

And don't even start on the void main() bit ! Change it to int main quick before the regulars see it
:D

When you get the code sorted, you'll find EOF can be generated from the keyboard via CTRL+d or CTRL+z depending on your OS, or it's automatically generated if you're reading a file and you get to the end.

The loop for simply copying chars is

Code:

---

#include <stdio.h>
int main ( ) {
  int ch;
  while ( (ch=getchar()) != EOF ) {
    // add your decision code here
    putchar( ch );
  }
  return 0;
}

---

ctrl-D or ctrl-Z usually generate the EOF