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difftime?

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linux-howto

http://www.daniweb.com – I've followed an example from a website on how to use diff time, however its telling me that it took 0 seconds which obviously isn't right...can anyone please explain what I'm doing wrong? Thanks in advance! int main() {     time_t t1, t2;     double dif;     Matrix A(2);     Matrix B(2);     A.SetElement(1,1,1);     A.SetElement(1,2,2);     A.SetElement(2,1,3);     A.SetElement(2,2,4);     B.SetElement(1,1,5);     B.SetElement(1,2,6);     B.SetElement(2,1,7);     B.SetElement(2,2,8);     for (int i = 0; i < 5; i++)     {     time(&t1);     A.Multiply(B);     time(&t2);     dif = difftime(t2,t1);     cout << "This took "<< dif << " seconds" << endl;     }     return 0; } (General)