字符串与整数之间的转换

#include <iostream> #include <stdlib.h> using namespace std; int main() { string s="12345"; long int i=strtol(s.c_str(),(char **)NULL, 10);// long int strtol(const char *nptr, char **endptr, int base); 字符串转换成长整数 cout << i<< endl; char ss[100]; sprintf(ss,"This is %d/n",12345); cout << ss; return 0; }