What are types of expressions evaluated in C Language?

An expression is a combination of operators and operands.

Operand is a data item in which operation is performed.

An operator performs an operation on data

For example; z = 3+2*1

       z = 5

Types of expressions

The different types of expressions that are evaluated in C language are as follows −

  • Primary expressions − The operand in this expression can be a name, a constant or any parenthesized expression. For example, c = a+ (5*b);

  • Postfix expressions − In a postfix expression, the operator will be after the operands. For example, ab+

  • Prefix expressions − In a prefix expression, the operator is before the operand. For example, +ab

  • Unary expression − It contains one operator and one operand. For example, a++, --b

  • Binary expression − It contains 2 operands and one operator. For example, a+b, c-d

  • Ternary expression − It contains 3 operands and one operator. For example; Exp1? Exp2: Exp3. If Exp1 is true, Exp2 is executed. Otherwise, Exp3 is executed.


Following is the C program for the expressions which are evaluated in C language −

 Live Demo

#include <stdio.h>
   int a , b;
   a = 10;
   printf( "Value of b is %d
", (a == 1) ? 100: 200 );//ternary expression    printf( "Value of b is %d
", (a == 10) ? 10: 20 );//ternary expression }


When the above program is executed, it produces the following result −

Value of b is 200
Value of b is 10