每日一题——第八十二题

题目：将一个控制台输入的字符串中的所有元音字母复制到另一字符串中

#include<stdio.h>
#include<string.h>
#include<stdbool.h>
#include<ctype.h>
#define MAX_INPUT 1024bool isVowel(char p);int main() {char input[MAX_INPUT];char output[MAX_INPUT];printf("请输入一串字符串：\n");fgets(input, sizeof(input), stdin);size_t length = strlen(input);//去除字符串末尾的换行符if (length > 0 && input[length - 1] == '\n') {input[length - 1] = '\0';}char* p = input;int i = 0;while (*p){if (isVowel(*p)) {output[i++] = *p;}p++;}printf("所有的元音字母为：\n");for (int j = 0; j < i; j++){printf("%c", output[j]);}return 0;
}bool isVowel(char p) {char ch = tolower(p);return ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u';
}