#include <iostream>#include <cstdio>using namespace std;const int SIZE=100;int main(){    char letter[100];    int a,e,i,o,u,n=0;    a=e=i=o=u=0;    gets(letter);    while(letter[n]!='\0')        {            if(letter[n]=='a')            a++;            else if(letter[n]=='e')            e++;            else if(letter[n]=='i')            i++;            else if(letter[n]=='o')            o++;            else if(letter[n]=='u')            u++;            n++;         }    cout<<"a: "<<a<<endl<<"e: "<<e<<endl<<"i: "<<i<<endl<<"o: "<<o<<endl<<"u: "<<u<<endl;    return 0;}

统计每个元音字母在字符串中出现的次数