aim = input().lower()
string = ' ' + input().lower() + ' '
count = 0
length = len(aim)
for i in range(len(string)-length):
    if string[i:i + length + 2] == ' ' + aim + ' ':
        count += 1
        if count == 1:
            position = i
if count == 0:
    print(-1)
else:
    print(count,position)

确实简单一点点，@玉米大帝

#include<bits/stdc++.h>
using namespace std;
string dan,ci,s;
int cur=-1,ans;
int main(){
    cin>>ci;
    for(int i=0;i<ci.size();i++)ci[i]=tolower(ci[i]);
    getchar();
    getline(cin,s);
    s+=' ';
    for(int i=0;i<s.size();i++)s[i]=tolower(s[i]);
    for(int i=0;i<s.size();i++){
        if(s[i]==' '){
            if(dan==ci){
                ans++;
                if(cur==-1)cur=i-ci.size();
            }
            dan="";
        }
        else dan+=s[i];
    }
    if(ans==0) printf("-1");
    else printf("%d %d",ans,cur);
    return 0;
}

我觉得用Python做会不会更简单一点