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  1. #include<stdio.h>
  2. int main (){
  3. 	double num1= 3.14159, num2, mult;
  4. 	scanf ("%lf", &num2);
  5. 	num2=num2*num2;
  6. mult = num1*num2;
  7. printf("A=%.4lf\n", mult);
  8. return 0;
  9. }
  10.  
Success #stdin #stdout 0s 9424KB
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stdin
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2.00
stdout
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A=12.5664
https://ideone.com/65l24I
language:
C (gcc 8.3)
created:
5 years ago
visibility:
public

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