If control structure in c lnaguage
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The document discusses the syntax of if control structures in C, including relational operators like <, >, <=, >=, ==, and !=. It provides examples of if statements using these relational operators to evaluate expressions that return 1 if true or 0 if false, and then execute the code block accordingly.
If control structure in c lnaguage
- 1. Syntax of if control structure in C
- 2. Relational Operators in C Operator Meaning Example Value of the expression < less than age < 30 > greater than height > 6.2 <= less than or equal to taxable <= 20000 Value is 0 (Zero) if expression is false >= greater than or equal to temperature >= 98.6 == equal to marks == 100 != not equal to number != 250 Value is 1 (one) if expression is True
- 3. if(x<y) { ………. ………. } if(‘a’<‘P’) { ………. ………. } If x contains 5 and y contains 10 then value of the expression is 1 and condition is true If x contains 10 and y contains 4 then value of the expression is 0 and condition is false As ASCII value of A is 97 and ASCII value of P is 80 the expression is false and value of the expression is 0 If block
- 4. if(-5) { ………. ………. } Valid condition. -5 is a truth value and is non zero. So value of the expression is 1 and statement is true! if(x) { ………. ………. } If x contains any non zero value the expression is true and value of the expression is 1. If x contains zero, value of the expression is 0 and statement is false