题解 | #字符的个数#
字符的个数
https://www.nowcoder.com/practice/dc28f2bf113a4058be888a5875206238
#include<bits/stdc++.h>
using namespace std;
int main()
{
string s;
cin>>s;
int aNum = 0, bNum = 0, cNum = 0;
// write your code here......
for (int i = 0; i < s.length(); ++i)
{
//
if (s[i] == 'a')
{
++aNum;
}
else if (s[i] == 'b')
{
++bNum;
}
else if (s[i] == 'c')
{
++cNum;
}
}
cout << aNum << " " << bNum << " " << cNum << endl;
return 0;
}
重点在于知道string类型可以用[]来访问，其长度可以用length()计算。