CS256 - Principles of Structured Design Fall 2021

Displaying ./code/cs256su21code/jun23/isOdd.c

/*
midterm review:
a review of making a function that returns either a 1(for true) or 0 (for false)

There is a problem on the midterm where I will have you do a function that will return 
either a 1 or a 0, but there will also be a loop involved here.

*/
#include <stdio.h>


int isOdd(int n); //function declaration
				  // this tells the compiler that we've got a function defined 
				  // below the main function


//the function is named isOdd
// it returns an integer (the int before the function name)
// it takes one integer as an argument (hence the "int n" inside the parenthesis)

//the function will be defined below main


int main(){

	int num;

	printf("Enter a number: ");
	scanf("%d", &num);

	if(isOdd(num) == 1)
		printf("This number is odd\n");
	else
		printf("This number is even\n");

	return 0;

}
//we define the function down here
//this is where we tell the computer how to do this thing.
//this function determines if the given number is odd
int isOdd(int n){

	if(n % 2 == 0)
		return 0;
	else
		return 1;

}