由键盘输入一串字符，统计其中大写字母AEIOU各自出现的次数

# include <stdio.h>
void main()
{
int i,k1=0,k2=0,k3=0,k4=0,k5=0;
char str[20];
gets(str);
for(i=0;str[i]!='\0';i++)
{if(str[i]=='A') k1++;
if(str[i]=='E') k2++;
if(str[i]=='I') k3++;
if(str[i]=='O') k4++;
if(str[i]=='U') k5++;
}
printf("A has %d\nE has %d\nI has %d\nO has %d\nU has %d\n",k1,k2,k3,k4,k5);

}