2024年12月 GESP C++ 3级单选题第12题｜真题与答案解析

想要计算从数字n到数字m之间（包含n和m）有多少个数字d出现，下列程序哪个能够实现（）。

cpp int n,m,res,d; cin >> n >> m>>d; for(int i = n+1; i <= m; i++){    int temp = i;    while(temp){       if(temp % 10 == d) res++;       temp /= 10;    } } cout << res << endl; return 0;

cpp int n,m,res,d; cin >> n >> m>>d; for(int i = n; i <= m; i++){    int temp = i;    while(temp){       if(temp % 10 = d) res++;       temp /= 10;    } } cout << res << endl; return 0;

cpp int n,m,res=0,d; cin >> n >> m>>d; for(int i = n; i <= m; i++){    int temp = i;    while(temp){       if(temp % 10 == d) res++;       temp /= 10;    } } cout << res << endl; return 0;

cpp int n,m,res=0,d; cin >> n >> m>>d; for(int i = n; i <= m; i++){    while(temp){       if(temp % 10 == d) res++;       temp /= 10;    } } cout << res << endl; return 0;