题解 | #计算某字符出现次数#，求指教有没有可以改进的地方
计算某字符出现次数
https://www.nowcoder.com/practice/a35ce98431874e3a820dbe4b2d0508b1?tpId=37&tqId=21225&rp=1&ru=/exam/oj/ta&qru=/exam/oj/ta&sourceUrl=%2Fexam%2Foj%2Fta%3FtpId%3D37&difficulty=undefined&judgeStatus=undefined&tags=&title=
#include <stdio.h>
int main() {
char str[1000];
char cha1,cha2;
int a=0, b;
while (scanf("%c", &cha1) != EOF)
{ // 注意 while 处理多个 case
// 64 位输出请用 printf("%lld") to
str[a]=cha1;
a++;
}
cha2=str[a-2];
for(b=0;a>=4;a--)
{
cha1=str[a-4];
b=b+(tolower(cha1)==tolower(cha2));
}
printf("%d",b);
return 0;
}
查看9道真题和解析