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  1. //13
  2. #include <iostream>
  3. #include <string>
  4. #include <math.h> 
  5. using namespace std;
  6. int main()
  7. {
  8.  float R1,R2,S1,S2,S3,P;
  9.   P=3.14;
  10.   cout<<"Enter R1: ";
  11.    cin >>R1;
  12.   cout<<"Enter R2: ";
  13.   cin >>R2; 
  14.   S1=P*R1*R1;
  15.   S2=P*R2*R2;
  16.   S3=S1-S2;
  17.   cout<<"S1="<<S1;
  18.   cout<<"\nS2="<<S2;
  19.   cout<<"\nS3="<<S3;
  20.  
  21. }
Success #stdin #stdout 0s 4568KB
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stdin
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Standard input is empty
stdout
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Enter R1: Enter R2: S1=inf
S2=0
S3=inf
https://ideone.com/jb8qRO
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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