``````#include <iostream>
#include <cmath>
#include <iomanip>
using namespace std;
const float pi=3.14;
const float e=2.71828;
int main()

int r,h;
double A,E1,E2;
cout<< "please enter two positive integers for r and h: "<<endl;
cin>>r>>h;
A=(2*pi*r*r+2*r*r*h);
E1=(pow(e,h))+(3*(log10(A)));
E2=sqrt(abs(cos(pow(r,2.0)+sin(pow(r,2.0)));
cout<<fixed<<setprecision(2)<<showpoint;
cout<<"======      ======      ====      ==      =="<<endl;
cout<<setw(6)<<r<<setw(12)<<h<<setw(10)<<A<<setw(8)<<E1<<setw(8)<<E2<<endl;

return 0;
}
``````

Error list:

Warning 1 warning C4305: 'initializing' : truncation from 'double' to 'const float'
Warning 2 warning C4305: 'initializing' : truncation from 'double' to 'const float'

what could i do ?

Hi sunshine102030, welcome! :o)
Instaed of float on lines 5 and 6, use double.

Try
`const double pi=3.14;`
`const double e=2.718281828;`
instead. That's what ddanbe was trying to tell you.

## All 5 Replies

Hi sunshine102030, welcome! :o)
Instaed of float on lines 5 and 6, use double.

Hi ddanbe,
thanks ,I tried, but it is still wrong

``````#include <iostream>
#include <cmath>
#include <iomanip>
using namespace std;
const float pi=3.14;
const float e=2.71828;
int main()
{
float r,h;
double A,E1,E2;
cout<< "please enter two positive integers for r and h: "<<endl;
cin>>r>>h;
A=(2*pi*r*r+2*r*r*h);
E1=(pow(e,h))+(3*(log10(A)));
E2=sqrt(abs(cos(r*r)+sin(r*r)));
cout<<fixed<<setprecision(2)<<showpoint;
cout<<"======      ======      ====      ==      =="<<endl;
cout<<setw(6)<<int(r)<<setw(12)<<int(h)<<setw(10)<<A<<setw(8)<<E1<<setw(8)<<E2<<endl;

return 0;
}
``````

I made these changes and i think it is correct , but they ask us to convert r^2 in the functions sin and cos to radians
so who i can do that ?

``````#include <iostream>
#include <cmath>
#include <iomanip>
using namespace std;
const float pi=3.14;
const float e=2.718281828;
int main()
{
float r,h;
double A,E1,E2;
cout<< "please enter two positive integers for r and h: ";
cin>>r>>h;
A=(2*pi*r*r)+(2*pi*r*h);
E1=(pow(e,h))+(3*(log10(A)));
cout<<endl;
cout<<"  Radius      Height      Area      E1      E2"<<endl;
cout<<   fixed<<setprecision(2)<<showpoint;
cout<<"  ======      ======      ====      ==      =="<<endl;
cout<<   setw(8)<<int(r)<<setw(12)<<int(h)<<setw(10)<<A<<setw(8)<<E1<<setw(8)<<E2<<endl;
cout<<"  ============================================"<<endl;
return 0;
}
``````

i solve the problem , thanks.

Try
`const double pi=3.14;`
`const double e=2.718281828;`
instead. That's what ddanbe was trying to tell you.

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