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Declaration:
clock_t clock(void);
Returns the processor clock time used since the beginning of an
implementation-defined era (normally the beginning of the
program). The returned value divided by CLOCKS_PER_SEC
results in the number of seconds. If the value is unavailable,
then -1 is returned.
Example:
#include<time.h>
#include<stdio.h>
int main(void)
{
clock_t ticks1, ticks2;
ticks1=clock();
ticks2=ticks1;
while((ticks2/CLOCKS_PER_SEC-ticks1/CLOCKS_PER_SEC)<1)
ticks2=clock();
printf("Took %ld ticks to wait one second.\n",ticks2-ticks1);
printf("This value should be the same as CLOCKS_PER_SEC which is %ld.\n",CLOCKS_PER_SEC);
return 0;
}
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