#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<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("%.6f %.6f",c,d); return 0; }

#include #include using namespace std; int main() { char a; int b; float c; double d; cin >> a; cin >> b; cin >> c; cin >> d; cout << a << " " << b << " " << fixed << setprecision(6) << c << " " << d; return 0; }

#include

#include

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 <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<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;
}