题解 | #计算某字符出现次数#
计算某字符出现次数
https://www.nowcoder.com/practice/a35ce98431874e3a820dbe4b2d0508b1
#include<iostream>
#include<string>
using namespace std;
int main()
{
char s1,s2;
string S;
getline(cin,S);
cin>>s1;
if(s1>='a'&&s1<='z'){
s2=s1-32;
}
else if(s1>='A'&&s1<='Z')
{
s2=s1+32;
}
else{
s2=s1;
}
int sum=0;
for(int i=0;i<S.length();i++)
{
if(S[i]==s1||S[i]==s2){
sum++;
}
}
cout<<sum;
return 0;
}
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