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How to measure function execution time in C

1 Answer

0 votes
#include <stdio.h> 
#include <time.h> 

void f() { 
    int i = 0;
    
    while(i < 100000) { 
        i++;
    } 
} 

int main() 
{ 
    clock_t ct = clock(); 
    
    f(); 
    ct = clock() - ct; 
    double total_time = ((double)ct) / CLOCKS_PER_SEC; 
  
    printf("%f seconds", total_time);
    
    return 0; 
} 


/*
run:

0.000258 seconds

*/

 




answered Apr 5 by avibootz
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