#include<bits/stdc++.h> 
using namespace std; 
int main()
{ 
 double a; 
 cin>>a; 
 if(a<=10) 
  cout<<fixed<<setprecision(2)<<a8.00; 
 else 
  cout<<fixed<<setprecision(2)<<a8.00*0.75; 
 return 0; 
}

#include<bits/stdc++.h> using namespace std; int main() { int n,s; cin >> n ; if(10>=n) { s=8n; float s=40.00; cout<<fixed<<setprecision(2)<<s<<endl; } else if(n>10) s=(87.5)*n;

cout<<fixed<<setprecision(2)<<s<<endl;
return 0;

}

#include<bits/stdc++.h> using namespace std; int main() { double n; cin>>n; if(n<=10.00) cout<<fixed<<setprecision(2)<<8.00n; else cout<<fixed<<setprecision(2)<<8.00n*(7.50/10.00); return 0; }

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int a;
    float b,c;
    cin>>a;
    b=a*8.00;
    c=a*8.00*0.75;
    printf("%.2f",(a>10?c:b));
    return 0;

}

思路

水题。

code

#include<bits/stdc++.h>
using namespace std;
int n;
int main(){
	cin>>n;
	printf("%.2lf",n>10?6.0*n:8.0*n);
}

#include<bits/stdc++.h> using namespace std; int main() { double n,y; cin>>n; if(n<=10) { cout<<fixed<<setprecision(2)<<8n; } else { y=0.758*n; cout<<fixed<<setprecision(2)<<y; } return 0; }

#include<bits/stdc++.h> using namespace std; const double q=8.00; int main() { int x; double y; cin>>x; if(x<10.00) { y=xq1.00; } else { y=xq0.75; } cout<<fixed<<setprecision(2)<<y; return 0; }

看好题目 #include<bits/stdc++.h> using namespace std; int main() { double n; cin>>n; if(n<=10) { cout<<fixed<<setprecision(2)<<n8.00; } else if(n>10) { cout<<fixed<<setprecision(2)<<n8.00*0.75; } return 0; }

#include<bits/stdc++.h> using namespace std; int main(){ double a; cin>>a; if(a<=10) cout<<fixed<<setprecision(2)<<a8.00; else cout<<fixed<<setprecision(2)<<a8.00*0.75; return 0; }

#include<bits/stdc++.h> using namespace std; int main() {double n,a; cin>>n; if(n<10&&n>=0) {a=8n; cout<<fixed<<setprecision(2)<<a; } if(n>10) {a=8n*0.75; cout<<fixed<<setprecision(2)<<a; } return 0; }