C Relational Operators ~ Bachelor Zone

C Relational Operators

Relational operators in C programming language are as follows: <, <=, >, >=, ==, != . They are used in Boolean conditions or expression and returns true or false. Here is a program which demonstrate relational operators:

01#include <stdio.h>
02/* a program demonstrates C relational operators */
03  
04  
05void print_bool(bool value){
06    value == true ? printf("true\n") : printf("false\n");
07};
08  
09void main(){
10    int x = 10, y = 20;
11     
12    printf("x = %d\n",x);
13    printf("y = %d\n",y);
14     
15    /* demonstrate == operator */
16    bool result = (x == y);
17    printf("bool result = (x == y);");
18    print_bool(result);
19  
20    /* demonstrate != operator */
21    result = (x != y);
22    printf("bool result = (x != y);");
23    print_bool(result);
24  
25    /* demonstrate > operator */
26    result = (x > y);
27    printf("bool result = (x > y);");
28    print_bool(result);
29  
30    /* demonstrate >= operator */
31    result = (x >= y);
32    printf("bool result = (x >= y);");
33    print_bool(result);
34  
35    /* demonstrate < operator */
36    result = (x < y);
37    printf("bool result = (x < y);");
38    print_bool(result);
39  
40    /* demonstrate <= operator */
41    result = (x <= y);
42    printf("bool result = (x <= y);");
43    print_bool(result);
44     
45  
46    /* keep console screen until a key stroke */
47    char key;
48    scanf(&key);
49}

Here is the output:

x = 10
y = 20
bool result = (x == y);false
bool result = (x != y);true
bool result = (x > y);false
bool result = (x >= y);false
bool result = (x < y);true
bool result = (x <= y);true