CS256 - Principles of Structured Design Fall 2021

Displaying ./code/sternflCode/nov2.c

#include<stdio.h>
 
//expects an integer value to be plugged in
//function f will return an integer value
int f(int x);   //prototype or   function declaration

int g(int x, int *p);



int main() {
  // comunicates to the function by plugging 137
  printf("%d\n", f(137));
  //function communicates back to main by returning a value
//-------------------
  int num = 34;
  //main and function g communicate
  int x;
  printf("Please enter a non-zero value ");
  scanf("%d", &x);
  if (0==g(x,&num))
    printf("%d\n", num);
  else
    printf("can NOT divide by 0\n");
}

//function definition
int f(int x) {
  return 3*x;
}


int g(int x, int *p) {
  if (x==0) return 1;
  *p = (*p)/x;
  return 0;

}