为什么得到的程序开始运行时刻与结束运行时刻是相同的？

Question

我用time_t rawtime; struct tm * timeinfo; time ( &rawtime ); timeinfo = localtime ( &rawtime ); printf("程序运行开始，Currentlocal time and date: %s\n", asctime(timeinfo));……printf("程序运行结束，Currentlocal time and date: %s", asctime(timeinfo));

Answer 1

这样干,你少写了两行
time_t rawtime; 
struct tm * timeinfo; 
time ( &rawtime ); 
timeinfo = localtime ( &rawtime ); 
printf("程序运行开始，Currentlocal time and date: %s\n", asctime(timeinfo));
……
time ( &rawtime ); 
timeinfo = localtime ( &rawtime );
printf("程序运行结束，Currentlocal time and date: %s", asctime(timeinfo));