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  1. #include <iostream>
  2. #include <cstdlib>
  3. #include <cstring>
  4. #include <string>
  5.  
  6. using namespace std;
  7. char a[] = "3.000000000000000000000000000000000000000";
  8. double b = 3.141593;
  9.  
  10. int main()
  11. {
  12.     int i=2;
  13.     int n=strlen(a);
  14.     float f=strtod(a,0);
  15.     cout.precision(n);
  16.     while(f!=b && i<n){
  17.         cout<<f<<endl;
  18.         if(f<b){
  19.             if(a[i]=='9')i++;
  20.             a[i]++;
  21.         }else{
  22.             a[i]--;
  23.             i++;
  24.         };
  25.         f=strtod(a,0);
  26.     };
  27.     return 0;
  28. }
  29.  
Success #stdin #stdout 0s 3456KB
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stdin
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Standard input is empty
stdout
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3
3.099999904632568359375
3.2000000476837158203125
3.099999904632568359375
3.1099998950958251953125
3.11999988555908203125
3.13000011444091796875
3.1400001049041748046875
3.150000095367431640625
3.1400001049041748046875
3.1410000324249267578125
3.1419999599456787109375
3.1410000324249267578125
3.1410999298095703125
3.14120006561279296875
3.1412999629974365234375
3.1414000988006591796875
3.141499996185302734375
3.1415998935699462890625
3.141499996185302734375
3.141510009765625
3.141520023345947265625
3.14153003692626953125
3.141540050506591796875
3.1415500640869140625
3.141560077667236328125
3.14157009124755859375
3.141580104827880859375
3.141590118408203125
3.14159107208251953125
3.1415920257568359375
3.14159297943115234375
3.14159393310546875
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.1415932178497314453125
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.14159297943115234375
3.1415932178497314453125
https://ideone.com/zyapfV
language:
C++ (gcc 8.3)
created:
8 years ago
visibility:
public

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