timer - How to find how much time has elapsed in C++ using sys/times.h -

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i want following:

get t1 run program t2 display t2 - t1

basically i'm trying find out how time program used. have seen several solutions this, 1 1 sys/times.h used, haven't quite figured out. how can done?

struct timeval timestart,timeend; int error1=gettimeofday(&timestart, null); //stuff want measure goes here int error2=gettimeofday(&timeend, null); if(error1 || error2) return -1; //some error occured  //this gives result in microseconds. return (timeend.tv_sec - timestart.tv_sec)*1000000.0+(timeend.tv_usec - timestart.tv_usec);

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