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  1. #include <stdio.h>
  2.  
  3. int is_panggram(const char *str) {
  4.     char ch;
  5.     int present = 0;
  6.     int result = 0;
  7.     int x;
  8.     while (ch = *str++) {
  9.         if(ch > 'z') return 0;
  10.         else if(ch >= 'a') x = 1<<(ch - 'a');
  11.         else if(ch >= 'A') x = 1<<(ch - 'A');
  12.         else return 0;
  13.         if(x & present == x) continue;
  14.         else present |= x;
  15.         result |= x;
  16.     }
  17.     return 0x3ffffff == result;
  18. }
  19.  
  20. int main() {
  21.     printf("%d\n", is_panggram("ABBBBBCDEFghijklmnopqrstuvwxyZ"));
  22.     printf("%d\n", is_panggram("abdefghijklmopqrstuvwxyz"));
  23. }
Success #stdin #stdout 0s 10320KB
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https://ideone.com/IcnlMs
language:
C (gcc 8.3)
created:
9 years ago
visibility:
public

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