WebJun 1, 2015 · Use time() when you need the exact time taken, including the time when the process was in wait queue for resource but if you need time taken by your process in execution then use clock(). clock() will be faster (multiple threads executing in parallel which will speed up the clock) or slower (resources are scarce). Clock Code: WebDec 20, 2024 · Steps: Declare a character array. Assign number as string using sprintf () function in character array. Extract the digits now by using simple loop from 0 to string …
gcc - Why does clock() returns -1 in C - Stack Overflow
WebApr 5, 2024 · If the processor time used is not available or its value cannot be represented, the function returns the value (clock_t) -1. etc. This tells us that -1 means that the processor time ( CLOCK_PROCESS_CPUTIME_ID) is unavailable. The solution is to use CLOCK_MONOTONIC instead. WebApr 28, 2015 · clock_t clock( void ); Return Value. The elapsed wall-clock time since the start of the process (elapsed time in seconds times CLOCKS_PER_SEC). If the amount of elapsed time is unavailable, the function returns –1, cast as a clock_t. Remarks. The clock function tells how much wall-clock time the calling process has used. how heavy is 1 liter
Time, Clock, and Calendar Programming In C - catb.org
WebApr 28, 2015 · clock_t clock( void ); Return Value. The elapsed wall-clock time since the start of the process (elapsed time in seconds times CLOCKS_PER_SEC). If the amount … The C library function clock_t clock(void)returns the number of clock ticks elapsed since the program was launched. To get the number of seconds used by the CPU, … See more This function returns the number of clock ticks elapsed since the start of the program. On failure, the function returns a value of -1. See more The following example shows the usage of clock() function. Let us compile and run the above program that will produce the following result − See more WebDec 12, 2014 · clock() returns the number of clock ticks elapsed since an epoch related to the particular program execution. CLOCKS_PER_SEC this macro expands to an expression representing the number of clock ticks per second, where clock ticks are units of time of a constant but system-specific length, as those returned by function clock. highest scoring super bowl 1995