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  1. #include <stdio.h>
  2.  
  3. char global[] = "hello";
  4.  
  5. char *process_string(const char *str) {
  6. 	str = global;
  7. 	//str[0] = '1';    // Não pode mexer no conteúdo duma string constante
  8. 	return str;
  9. }
  10.  
  11. char *process_string_2(char * const str) {
  12. 	//str = global;    // Não pode atribuir a um ponteiro constante
  13. 	str[0] = '2';
  14. 	return str;
  15. }
  16.  
  17. char *process_string_3(char *str) {
  18. 	str = global;    
  19. 	str[0] = '3';
  20. 	return str;
  21. }
  22.  
  23. int main(void) {
  24. 	char string[] = "world";
  25.  
  26. 	printf("%s %s\n", process_string(string), string);
  27. 	printf("%s %s\n", process_string_2(string), string);
  28. 	printf("%s %s\n", process_string_3(string), string);
  29.  
  30. 	return 0;
  31. }
  32.  
Success #stdin #stdout 0s 2292KB
comments (?)
stdin
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Standard input is empty
stdout
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hello world
2orld 2orld
3ello 2orld
https://ideone.com/aMaWpJ
language:
C (gcc 8.3)
created:
10 years ago
visibility:
public

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