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Conditional operators
The conditional operator, also known as the ternary operator, allows an expression to take on one of two values based on whether a condition is true or false. It requires three operands - a condition, a value if the condition is true, and a value if the condition is false. The conditional operator provides a shorthand for a basic if-else statement where a variable is assigned one of two values based on a condition. While it can be nested, doing so reduces readability, so conditional operators are best used only in place of simple if-else assignments rather than complex nested logic.
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Conditional operators
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- 2. INTRODUCTION ○ The conditionaloperator is the one operator in C that is considered a ternary operator, specifically because it requires three operands. ○ Binary operators require two operands, and unary operators require one operand. So, the conditional operator is not THE ternary operator. It is an operator that just happens to be ternary. ○ The conditional operator is a shorthand for a specific if-else control structure scenario. 2
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- 4. “ 4 ○ The basicsyntax of a Ternary Operator in C Programming is as shown below: expression ? statement1: statement2 ○ From the above syntax, If the given test condition is true then it will return statement1 and if the condition is false then statement2 is returned.
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- 6. Example 6 /* Ternary Operatorin C Example */ #include<stdio.h> int main() { int age; printf(" Please Enter your age here: n "); scanf(" %d ", &age); (age >= 18) ? printf(" You are eligible to Vote ") : printf(" You are not eligible to Vote "); return 0; }
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- 8. char *diagnosis; double temperature; if(temperature <= 98.6) { diagnosis = "well"; } else { diagnosis = "sick"; } printf("With a temperature of %.1f, you appear to be %s.n",temperature, diagnosis); If-else and Conditional Code block Comparison char *diagnosis; double temperature; diagnosis = (temperature <= 98.6) ? "well" : "sick"; printf("With a temperature of %.1f, you appear to be %s.n", 8
- 9. Points to Remember ○ Theconditional operator does not take the place of all if-else control structures. It is designed specifically for the situation where an expression needs to take on one value if the condition is true, and a different value of the condition is false. ○ Some coding/style standards consider the conditional operator to be less readable than the equivalent if-else statement, so check your local coding/style standard. ○ Although conditional operators can be nested (i.e., another conditional operator can be used inside the true section between the ? and :, another conditional operator can be used inside the false section after the :), this practice leads much less readable code. ○ Nesting of conditional operators should be avoided, to keep the code readable and maintainable. ○ You may find the conditional operator used in #define macros, because it facilitates conditional decisions within an expression. 9
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