c/c++ No.20 查找一个字符

char *strchr(char const *str, int ch);

#include <iostream>#include <cstring>using namespace std;  int main() {    char a[101] = "1234567890987654321";    cout << strchr(a, '3') << endl;//最左边    cout << strrchr(a, '3') << endl;//最右边    return 0;  }