C tips & tricks

condition without if & else

int age = 20;
int major = 0;

major = age >= 18;              // this line  <<<<<<<<<<<<<<<<<<<<<<<
printf(”Major equals : %d\n”, major);

int pointer & function returns pointer

# Simple approach
#include "stdio.h"

int X;
int * ptrX = &X;

int * manipX();

int main() {


  printf("X: %d\n", *manipX() );

  return 0;
}

int * manipX() {
  int * newptr;
  *newptr = 5;

  return newptr;    // !! 5
}