C Syntax

The Boolean OR expression, AKA logical OR expression, is used to compute the Boolean or of two integer values, considered as Boolean.  In C, the Boolean OR operator short circuits, so Boolean OR expressions can also be used to control conditional execution.

The Boolean OR expression is used to compute the Boolean OR of two integer values, considered as Boolean values. 

BNF

boolean-or-expression

::= <boolean-or-expression> <boolean-or-operator> <boolean-and-expression>

::= <boolean-and-expression>

---

EBNF

boolean-or-expression

::= <boolean-and-expression> ( <boolean-or-operator> <boolean-and-expression> ) *

logical-or-operator

The operands of the OR operator should be of int type. 

The operands of the OR operator will be coerced to int type if possible. 

boolean-or-expression

#include <stdio.h>

void Display (int A, int B);

int main () {
  Display (0, 0);
  Display (0, 1);
  Display (1, 0);
  Display (1, 1);
  Display (2, 7);
  Display (15, 22);
}

void Display (int A, int B) {
  int C;
  C = A || B;
  printf ("%i || %i is %i\n", A, B, C);
}

0 || 0 is 0
0 || 1 is 1
1 || 0 is 1
1 || 1 is 1
2 || 7 is 1
15 || 22 is 1