Posts by karran • 41 points

• 1

  votes

  1

  answer

  2284

  views

  A: Error 1452 mysql: Cannot add or update a Child Row

  The problem is here: ALTER TABLE produtos ADD CONSTRAINT id_fk FOREIGN KEY (id_produto) REFERENCES cart_produtos(id_produtos); With this to create a product record, you need to use an existing…

  mysql sql

  answered 7 years, 5 months ago karran 41

• 0

  votes

  1

  answer

  174

  views

  A: How to replace/optimize multiple ifs in C?

  Using Return to return the aux when editing successfully and -1 when an error occurs it is possible to remove the last if and some elses. int editar(aluno *alunoPtr) { aluno *tmp; int edita, aux =…

  c if

  answered 7 years, 5 months ago karran 41