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  1. #include <stdio.h>
  2.  
  3. const char *ft_strstr(const char *str, const char *to_find) {
  4.     if (str[0] == 0 && to_find[0] == 0) return str;
  5.     for (int i = 0; str[i]; i++) {
  6.         int j;
  7.         for (j = 0; to_find[j] && str[i + j] && to_find[j] == str[i + j]; j++);
  8.         if (to_find[j] == 0) return &(str[i]);
  9.     }
  10.     return NULL;
  11. }
  12.  
  13. int main(void) {
  14.     printf("1: %s\n", ft_strstr("Testando", "st"));
  15.     printf("2: %s\n", ft_strstr("O rato roeu a roupa do rei de Roma", "ro"));
  16.     printf("3: %s\n", ft_strstr("Nao vai achar", "vai nada"));
  17.     printf("4: %s\n", ft_strstr("Vai achar no fim", "fim"));
  18.     printf("5: %s\n", ft_strstr("Logo no inicio vai ser encontrado", "Logo no inicio"));
  19.     printf("6: %s\n", ft_strstr("Nao vai procurar nada", ""));
  20.     printf("7: %s\n", ft_strstr("", "Vai procurar em lugar nenhum"));
  21.     printf("8: %s\n", ft_strstr("", ""));
  22.     return 0;
  23. }
Success #stdin #stdout 0s 10320KB
comments (?)
stdin
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Standard input is empty
stdout
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1: stando
2: roeu a roupa do rei de Roma
3: (null)
4: fim
5: Logo no inicio vai ser encontrado
6: Nao vai procurar nada
7: (null)
8:
https://ideone.com/vTHPMs
language:
C (gcc 8.3)
created:
7 years ago
visibility:
public

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