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  • Book Overview & Buying Extreme C
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Extreme C

Extreme C

By : Kamran Amini
4.5 (29)
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Extreme C

Extreme C

4.5 (29)
By: Kamran Amini

Overview of this book

There’s a lot more to C than knowing the language syntax. The industry looks for developers with a rigorous, scientific understanding of the principles and practices. Extreme C will teach you to use C’s advanced low-level power to write effective, efficient systems. This intensive, practical guide will help you become an expert C programmer. Building on your existing C knowledge, you will master preprocessor directives, macros, conditional compilation, pointers, and much more. You will gain new insight into algorithm design, functions, and structures. You will discover how C helps you squeeze maximum performance out of critical, resource-constrained applications. C still plays a critical role in 21st-century programming, remaining the core language for precision engineering, aviations, space research, and more. This book shows how C works with Unix, how to implement OO principles in C, and fully covers multi-processing. In Extreme C, Amini encourages you to think, question, apply, and experiment for yourself. The book is essential for anybody who wants to take their C to the next level.
Table of Contents (27 chapters)
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Index

No-return functions

A function call can end either by using the return keyword or by reaching the end of the function's block. There are also situations in which a function call never ends, and this is usually done intentionally. Look at the following code example contained in Code Box 12-4:

void main_loop() {
  while (1) {
    ...
  }
}
  
int main(int argc, char** argv) {
  ...
  main_loop();
  return 0;
}

Code Box 12-4: Example of a function that never returns

As you can see, the function main_loop performs the main task of the program, and if we return from the function, the program could be considered as finished. In these exceptional cases, the compiler can perform some more optimizations, but somehow, it needs to know that the function main_loop never returns.

In C11, you have the ability to mark a function as a no-return function. The _Noreturn keyword from the stdnoreturn.h header file can be used to specify that a function never exits. So, the code in...

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Extreme C
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