题解 | 获取字符串长度

#include <iostream>
using namespace std;

int main() {

    char str[100] = { 0 };
    cin.getline(str, sizeof(str));

    // write your code here......
    int count = 0;
    char* ptr = str;
    while (*ptr != '\0' && ptr < str + 100) {
        count ++;
        ptr ++;
    }

    cout << count << endl;
    

    return 0;
}