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字符串小技巧

字符 pre clas 2.3 main end atof cnblogs return

31 char s[100];
32 
33 int main() {
34     strcpy(s, "123");
35     cout << atoi(s) << endl;    //atol同atoi
36 
37     strcpy(s, "12.3");
38     cout << atof(s) << endl;    //沒有atolf
39     
40     strcpy(s, "12345678987654321");
41     cout << atoll(s) << endl;
42 43 return 0; 44 }

字符串小技巧