C++ 解法, 执行用时: 2ms, 内存消耗: 384KB, 提交时间: 2021-12-19

#include <iostream>
using namespace std;

int main() {

    char str[30] = { 0 };
    cin.getline(str, sizeof(str));

    int m;
    cin >> m;

    // write your code here......
     char s[30] = {0};
    int len=0;
    while(str[m-1]!='\0'){
        s[len++]=str[m-1];
        m++;
    }
    s[len]='\0';
    cout<<s<<endl;

    return 0;
}

C++ 解法, 执行用时: 2ms, 内存消耗: 388KB, 提交时间: 2021-12-05

#include <iostream>
using namespace std;

int main() {

    char str[30] = { 0 };
    cin.getline(str, sizeof(str));

    int m;
    cin >> m;

    // write your code here......
    char *p=str+m-1;
    while(*p!=0)
    {
        cout<<*p;
        p++;
    }

    return 0;
}

C++ 解法, 执行用时: 2ms, 内存消耗: 396KB, 提交时间: 2021-12-10

#include <iostream>
using namespace std;

int main() {

    char str[30] = { 0 };
    cin.getline(str, sizeof(str));

    int m;
    cin >> m;

    // write your code here......
    char s[30] = {0};
    char *q=str;
    char *p=s;
    for(int i=0;i<m-1;i++){
        q++;
    }
    while((*q)!='\0'){
        *p = *q;
        p++;
        q++;
    }
    *p = '\0';
    cout<<s<<endl;
    return 0;
}

C++ 解法, 执行用时: 2ms, 内存消耗: 396KB, 提交时间: 2021-11-30

#include <iostream>
using namespace std;

int main() {

    char str[30] = { 0 };
    cin.getline(str, sizeof(str));

    int m;
    cin >> m;

    // write your code here......
    char* p = str+(m-1);
    while(*p!='\0')
    {
        cout << *p ;
        p++;
    }

    return 0;
}

C++ 解法, 执行用时: 2ms, 内存消耗: 396KB, 提交时间: 2021-11-22

#include <iostream>
using namespace std;

int main() {

    char str[30] = { 0 };
    cin.getline(str, sizeof(str));

    int m;
    cin >> m;

    // write your code here......
    int i = 0;
    char res[30] = {0};
    char *c = &str[m - 1];
    while (*c != '\0') {
        res[i++] = *c;
        ++c;
    }
    printf("%s", res);

    return 0;
}