题解 | #计算某字母出现次数#
计算某字母出现次数
http://www.nowcoder.com/practice/a35ce98431874e3a820dbe4b2d0508b1
#include<stdio.h>
#include<ctype.h>
int main(void) {
char s[500]="";
char ch;
int i = 0;
int num = 0;
//获取到字符串
for(i = 0; (s[i] = getchar())!='\n'; i++) {
;
}
ch = getchar();
for(i = 0; s[i]; i++) {
if(isalpha(s[i])) {
//不区分大小写
if(s[i] == ch || s[i] == ch + 'a'-'A' || s[i] == ch - 'a'+'A') {
num++;
}
}
else if(s[i] == ch){
num++;
}
}
printf("%d\n", num);
}
