Measuring amount of CPU time taken by a piece of code, in C on Unix/Linux

Question

Can clock() be used as a dependable API to measure time taken by CPU to execute a snippet of code? When verified usng times() / clock(), both do not seem to measure the CPU

Answer 1

you can use clock_t to get the number of CPU ticks since the program started.

Or you can use the linux time command. eg: time [program] [arguments]