复兴无基础第九课 字符数组
2025-08-02 21:19:09
发布于：上海
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T1判断字符
#include <iostream>
using namespace std;
int main() {
char c;
cin >> c;
if ((c >= 'A') && (c <= 'Z')) {
cout << "Capital letter";
}else if((c >= 'a') && (c <= 'z')) {
cout << "Lowercase letter";
}else if((c >= '0') && (c <= '9')) {
cout << "Digital";
}else{
cout << c;
}
return 0;
}
T2鹦鹉学舌
#include <iostream>
#include <cstring>
using namespace std;
int main() {
char s[1005];
cin >> s;
cout << s;
return 0;
}
T3鹦鹉学舌2
#include <bits/stdc++.h>
using namespace std;
int main() {
char s[1005];
fgets(s,1005,stdin);
cout << s;
return 0;
}
T4替换字母
#include <iostream>
#include <cstring>
using namespace std;
char s[110];
int main() {
cin >> s;
int len = strlen(s);
for (int i = 0; i < len; i++) {
if (s[i] == 't') {
s[i]='w';
}
}
cout << s;
return 0;
}
T5大小写互换
#include<iostream>
#include<cstring>
using namespace std;
int main(){
char s[10005];
cin>>s;
//字符数组长度计算：strlen(数组名);
for(int i = 0;i <= strlen(s) - 1;i++){
if(s[i] >= 'A' && s[i] <= 'Z') s[i] += 32;
else if(s[i] >= 'a' && s[i] <= 'z') s[i]-= 32;
}
cout << s;
return 0;
}
T6小码君的密码
#include <iostream>
#include <cstring>
using namespace std;
int main() {
char s[110];
cin >> s; // 输入字符串
int len = strlen(s);
for (int i = 0; i < len; i++) {
if (s[i] == 'z') {
s[i] = 'a';
}else{
s[i] += 1;
}
}
cout << s;
return 0;
}
T7单词翻转
#include<bits/stdc++.h>
using namespace std;
int main(){
string s;
cin >> s;
for(int i = s.size() - 1; i >= 0; i--){
cout << s[i];
}
return 0;
}
T8简型密文
#include <iostream>
#include <cstring>
using namespace std;
char s[110];
int main() {
cin >> s; // 输入字符串
int len = strlen(s); // 字符个数/大小
for (int i = 0; i < len; i++) { // 遍历字符数组(字符串)
if (s[i] == 'e') {
s[i] = 't';
}
else if(s[i] == 'h') {
s[i] = 'Q';
}
}
cout << s;
return 0;
}
T9数字转换
#include <iostream>
#include <cstring>
using namespace std;
char s[110];
int main() {
int sum = 0;
cin >> s; // 输入字符串
int len = strlen(s); // 字符个数/大小
for (int i = 0; i < len; i++) { // 遍历字符数组(字符串)
if ((s[i] >= '0') && (s[i] <= '9')) {
sum += s[i] - '0';
}
}
cout << sum;
return 0;
}
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