【C语言】作业：统计字符串中元音字母a e i o u的个数并输出

#include<stdio.h>int main(){int i,sum=0;char s[80];printf("input the string:\n");gets(s);for(i=0;s[i]!='\0';i++){if(s[i]=='a' || s[i]=='e' || s[i]=='i' || s[i]=='o' || s[i]=='u')sum=sum+1;}printf("sum=%d\n",sum);return 0;}