CS256 - Fundamentals of Structured Programming

Displaying exercises/e7/solution/p3.c

#include <stdio.h>

#define K	1024

/**
 * Make a program that reads a line of input (up to 1024 characters, using
 * fgets,) and scans the input for the lowercase letter 'x'.  If it finds an x,
 * it should print "The string has an x in it.\n" and exit, if it does not, it
 * should print "The string did not have an x in it.\n", then exit.  You may
 * not use any standard library functions other than fgets for this assignment.
 */
int main(void)
{
  char buf[K+1];
  
  fgets(buf, K, stdin);
  
  for(int i=0; buf[i] != '\0'; i++) {
    if (buf[i] == 'x') {
      printf("The string has an x in it.\n");
      return 0;
    }
  }
  printf("The string did not have an x in it.\n");
  return 0;
}