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  1. int l = 0;
  2. int r = 1000;
  3. // l and r denote our current bounds: we know that l <= x <= r
  4. while(l<r) {
  5.   // we will ask about the number in the middle
  6.   int m = (l+r)/2;
  7.   // note: this is an integer division, thus e.g., for l=0, r=1 we get m=1/2=0
  8.   if(x <= m)
  9.     r = m;
  10.   else
  11.     l = m+1;
  12.   }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
prog.cpp:4:1: error: expected unqualified-id before ‘while’
 while(l<r) {
 ^~~~~
stdout
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Standard output is empty
https://ideone.com/5x6ygu
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
public

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