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  1. int binsearch(int x, int v[], int n)
  2. {
  3.     int low, high, mid;
  4.  
  5.     low = 0;
  6.     high = n - 1;
  7.     while(low <= high){
  8.         mid = (high+low)/2;
  9.         if(x < v[mid]){
  10.             high = mid - 1;
  11.         }else if(x > v[mid]){
  12.             low = mid + 1;
  13.         }else{
  14.             return mid;
  15.         }
  16.         printf("mid is %d\n",mid);
  17.     }
  18.  
  19.     return -1;
  20. }
  21.  
  22. int main(void)
  23. {
  24.     int v[] = {2,3,4,7,8,23,54,65,76};
  25.     int ret = binsearch(7, v, sizeof(v)/sizeof(int));
  26.  
  27.     printf("%d,ret is %d\n", sizeof(v),ret);
  28.     return 0;
  29. }
Success #stdin #stdout 0.01s 1676KB
comments (?)
stdin
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Standard input is empty
stdout
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mid is 4
mid is 1
mid is 2
36,ret is 3
https://ideone.com/E6Ma8
language:
C (gcc 8.3)
created:
12 years ago
visibility:
public

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