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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <time.h>
  4.  
  5. int main(void) {
  6.     srand(time(0));
  7.     char name[16];
  8.     unsigned long number, s1;
  9.     setvbuf(stdin, 0, 2, 0); // No need to understand this function, it's irrelevant to the question 
  10.     setvbuf(stdout, 0, 2, 0);   // // No need to understand this function, it's irrelevant to the question
  11.  
  12.     printf("Give me your name: ");
  13.     fgets(name, 16, stdin);
  14.  
  15.     s1 = rand() % 1000000;
  16.  
  17.     printf("Hello ");
  18.     printf(name);
  19.     printf("\nPick a number: ");
  20.     scanf("%lu", &number);
  21.  
  22.     if (number != s1) {
  23.         printf("The lucky number is %lu\n", s1);
  24.         puts("Good luck next time");
  25.     } else {
  26.         system("/bin/cat flag.txt");
  27.     }
  28.  
  29.     return 0;
  30. }
Success #stdin #stdout 0s 5536KB
comments (?)
stdin
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Standard input is empty
stdout
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Give me your name: Hello  ;�I'
Pick a number: The lucky number is 83468
Good luck next time
https://ideone.com/iY8V8M
language:
C (gcc 8.3)
created:
1 year ago
visibility:
public

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