随笔分类 -  c++

摘要：一、clock#includeclock_t start,end;start=clock();end=clock();couttime_t start,end;start=time();//time(&start)end=time();coutstruct timespec start,end;//struct timespec {// time_t tv_sec; /* seconds */// long tv_nsec; /* nanoseconds */// };clock_gettime(CLOCK_PROCESS_CPUTIME_ID,&start);clock_ge 阅读全文

摘要：一、类型转换#include stringstream ss;ss>i1>>i2;ss.clear();ss>s1;ss.clear();二、string逆序#include reverse(s1.begin(),s1.end());string s(s1.rbegin(),s1.rend());三... 阅读全文