题解 | #计算某字符出现次数#

#include #include #include

int main() { map<char,int>a; char mid; while ((mid = getchar()) != '\n') { if((mid>='A')&&(mid<='Z')) { mid=mid+'a'-'A'; } a[mid]++; } char T=getchar(); if((T>='A')&&(T<='Z')) { T=T+'a'-'A'; }

auto it=a.begin();
bool flag=false;
for(;it!=a.end();it++)
{
    if((it->first)==T)
        flag=true;
}
if( flag==true) 
    cout<<a[T]<<endl;
else{
    cout<<0<<endl;
}
return 0;

}