getchar : getchar « stdio.h « C Tutorial

1. C Tutorial
2. stdio.h
3. getchar

Read characters from stdin into the array s until the user presses ENTER

#include <stdio.h>

  int main(void)
  {
    char s[256], *p;

    p = s;
    printf("input char:");
    while((*p++ = getchar())!= '\n');
    *p = '\0'; /* add null terminator */

    printf(s);

    return 0;
  }

input char:123
123