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  1. #include <stdio.h>
  2. int main (void) {
  3.  int r;
  4.  float C;
  5.  float A;
  6.  int d;
  7.  float pi = 3.14;
  8.   int op=0;
  9.  scanf("%d\n",&op);
  10.  scanf("%d\n",&r);
  11.  d=r+r;
  12.  A=2*pi*r*r;
  13.  C= 2*pi*r;
  14. if (op=1) {
  15.  printf("%d\n",d);
  16. }
  17. if (op=2){
  18.  printf("%f\n",A);
  19. }
  20. if (op=3){
  21.  printf("%f\n",C);
  22. }
  23. }
Success #stdin #stdout 0s 9432KB
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stdout
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6
56.520000
18.840000
https://ideone.com/V1b5pt
language:
C (clang 8.0)
created:
6 years ago
visibility:
public

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