统计某个字符串中的标点符号数（c++11）

#include <iostream>#include <string>#include <cctype>/* run this program using the console pauser or add your own getch, system("pause") or input loop */using namespace std;int main(int argc, char** argv) {string str("some !!!!!!  dsjc string");decltype(str.size()) punct_cnt  = 0;for(auto c:str)if(ispunct(c))++punct_cnt;cout<< punct_cnt  << endl;return 0;}