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The order of execution of a C program is not always obvious, and not necessarily predictable. This chapter describes what you can count on.
| • Reordering of Operands | Operations in C are not necessarily computed in the order they are written. | |
| • Associativity and Ordering | Some associative operations are performed in a particular order; others are not. | |
| • Sequence Points | Some guarantees about the order of operations. | |
| • Postincrement and Ordering | Ambiguous execution order with postincrement. | |
| • Ordering of Operands | Evaluation order of operands and function arguments. | |
| • Optimization and Ordering | Compiler optimizations can reorder operations only if it has no impact on program results. |