算法训练——确定元音字母位置

//确定元音字母位置
#include<stdio.h>
#include<string.h> 
#define MAXN 100
int main(){
	char str[MAXN];
	scanf("%s",str);
	int length = strlen(str);
	for(int i=1;i<=length;i++){
		if(str[i] == ‘a‘ || str[i] == ‘e‘ || str[i] == ‘i‘ || str[i] == ‘o‘ || str[i] == ‘u‘){
			printf("%d",i+1);
			return 0;
		}
	}
	printf("0");
	return 0;
}