#include<stdio.h>
#include<iostream>
using namespace std;
int main(){
    char a;
    int b;
    float c;
    double d;
    cin >> a>>b>>c>>d;
    cout<< a<<" "<<b;
    printf(" %0.6f %0.6f",c,d);



    return 0;
}

#include <iostream> #include <cmath> #include <iomanip> #include <stack> #include <algorithm> #include <string> #include <cstring> #include <cstdio> using namespace std; const int INF = 0x3f3f3f3f; int main() { char a; int b; double c , d; cin >> a >> b >> c >> d; cout << a << " "; cout << b << " "; cout << fixed << setprecision(6)<< c << " "; cout << fixed << setprecision(6)<< d; return 0; }

#include <bits/stdc++.h>

using namespace std;

int main()
{
    char a;

    int b;

    float c;

    double d;

    cin >> a >> b >> c >> d;

    cout << a << " " << b;

    printf(" %0.6f %0.6f", c, d);

    return 0;
}

#include<iostream> #include<iomanip> #include<cmath> const int N=1e5+10; const int INF=0x3f3f3f3f; using namespace std; char a; int n; double m,x; int main() { cin>>a>>n>>m>>x; cout<<a<<" "; cout<<n<<" "; cout<<fixed<<setprecision(6)<<m<<" "; cout<<fixed<<setprecision(6)<<x; return 0; }

#include<stdio.h>
#include<iostream>
using namespace std;
int main(){
    char a;
    int b;
    float c;
    double d;
    cin >> a>>b>>c>>d;
    cout<< a<<" "<<b;
    printf(" %0.6f %0.6f",c,d);



    return 0;
}

要多做题

#include<bits/stdc++.h>
#include <queue>
#include <math.h>
#include <stack>
#include <stdio.h>
#include <iostream>
#include <vector>
#include <iomanip>
#include <string.h>
#include <algorithm>
using namespace std;
#define LL long long
const int N = 1e6 + 10;
const int INF = 0x3f3f3f3f;
char a;//对于字符变量，占位符应为 %c；
int b;//对于整形变量，占位符应为 %d；
float c;//对于单精度浮点数，占位符应为 %f；
double d;//对于双精度浮点数，占位符应为 %lf。
//单精度浮点数保留 k 位小数的方式为："%.kf"；
//双精度浮点数保留 k 位小数的方式为："%.klf"。
int main()
{
	cin >> a >> b >> c >> d;
	printf("%c %d %.6f %.6lf ", a, b, c, d);
	return 0;
}

#include <stdio.h> #include <iostream> #include <iomanip> using namespace std; int main() { char a; int b; float c; double d; cin>>a>>b>>c>>d; cout<<a<<" "<<b<<" "; cout<<fixed<<setprecision(6)<<c<<" "<<d<<endl;

}

a = input() b = int(input()) c = eval(input()) d = eval(input()) print(a,b,("%.6f" % c),("%.6f" % d))