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  1. #include <string.h>
  2. #include <stdio.h>
  3.  
  4. void ler_string(char* destino, size_t tamanho_leitura){
  5.     fgets(destino, tamanho_leitura, stdin);
  6.     size_t ultima_pos = strlen(destino) - 1;
  7.     if (destino[ultima_pos] == '\n'){
  8.         destino[ultima_pos] = '\0';
  9.     }
  10. }
  11.  
  12. int main(){
  13.  
  14.     char username[25];
  15.     char passwd[45];
  16.  
  17.     printf("Input your name ->");
  18.     ler_string(username, 25);
  19.  
  20.     printf("Input your password->");
  21.     ler_string(passwd, 45);
  22.  
  23.     char query[128];
  24.     sprintf(query,"select username, password from accounts where username='%s' and password='%s'\n", username, passwd);
  25.     printf("%s", query);
  26.  
  27.     return 0;
  28. }
  29.  
Success #stdin #stdout 0s 4384KB
comments (?)
stdin 
linus
123
stdout 
Input your name ->Input your password->select username, password from accounts where username='linus' and password='123'
https://ideone.com/ReewqH
language:
C (gcc 8.3)
created:
6 years ago
visibility:
public

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