||   Logical Operators in C, Logical OR Operator. If any of the two operands is non-zero, then the condition becomes true.

C Programming Language Operators and Enums in C Language (Article) Operators and Enums in C Language (Program)

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Program:

#include"stdio.h"
void main() {

   int a = 5;
   int b = 20;
   
   if ( a || b ) {
      printf("Condition is true\n" );
   }
}

Output:

Condition is true
Press any key to continue . . .

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