C++ primer 1.4.4答案

1.4.4节练习

int main(){
    int currVal=0,val=0;
    if(cin>>currVal){
        int cnt = 1;
        while(cin>>val){
            if(val==currVal){
                cnt++;
            }else{
                cout<<currVal<<" occurs "<<cnt<<" times "<<endl;
                currVal=val;
                cnt=1;
            }
        }
        cout<<currVal<<" occurs "<<cnt<<" times "<<endl;
    }
    return 0;
}

如果输入的所有值都是相等的，本节程序会一直运行下去，没有输出。

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int main(){
    int currVal=0,val=0;
    if(cin>>currVal){
        int cnt = 1;
        while(cin>>val){
            if(val<currVal){
                cnt++;
            }else{
                cout<<currVal<<" is bigger than "<<cnt<<" num"<<endl;
                currVal=val;
                cnt=1;
            }
        }
        cout<<currVal<<" occurs "<<cnt<<" times "<<endl;
    }
    return 0;
}