mikroC
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mikroC - C Compiler for Microchip PIC microcontrollers
The conditional operator ? : is the only ternary operator in C. Syntax of the conditional operator is:
expression1 ? expression2 : expression3
Expression1 evaluates first. If its value is true, then expression2 evaluates and expression3 is ignored. If expression1 evaluates to false, then expres- sion3 evaluates and expression2 is ignored. The result will be the value of either expression2 or expression3 depending upon which evaluates. The fact that only one of these two expressions evaluates is very important if you expect them to produce side effects!
Conditional operator associates from right to left.
Here are a couple of practical examples:
/* Find max(a, b): */
max = (a > b) ? a : b;
/* Convert small letter to capital: */
/* (no parentheses are actually necessary) */ c = (c >= 'a' && c <= 'z') ? (c - 32) : c;
Conditional Operator Rules
Expression1 must be a scalar expression; expression2 and expression3 must obey one of the following rules:
1.Both of arithmetic type; expression2 and expression3 are subject to the usual arithmetic conversions, which determines the resulting type.
2.Both of compatible struct or union types. The resulting type is the structure or union type of expression2 and expression3.
3.Both of void type. The resulting type is void.
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