Error assigning variable value to vector in C

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Error assigning variable value to vector in C

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#1 by (2 votes)
#2 by (2 votes)

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I am creating a user registry using struct . In it, there is the CPF field. As it is a very large field to save in numbers format, I decided to save as string, as well as in database where cpf is saved with varchar .

I do a validation not to allow 2 cpfs to be registered. For this, first I save the value in an auxiliary variable and pass in the validation I saved in the vector. The problem is when I pass the value of the variable to the vector.

Line error where I pass the value of the variable to the vector: vet[i].cpf = cpfAux;

[Error] assignment to expression with array type

My code:

#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>

struct colaborador{
    char nome[50];
    char cpf[18];
    char nascimento[11];
    float salario;
};

struct colaborador vet[2];
int i, j;
char nomePesquisa[30];
char cpfAux[18];
int contPesquisa = 0;
bool rep = false;

int cadastra(){


    for(i=0; i<2; i++){ 
        printf("Insira o nome:");
        gets(vet[i].nome);

        printf("Insira o cpf:");
        gets(cpfAux);


            for(j=0; j<2; j++){
                while(strcmp(cpfAux,vet[j].cpf) == 0) {
                    rep = true;
                    printf("ERRO, CPFS IGUAIS!\n\n");

                    printf("Insira o cpf novamente:");
                    gets(cpfAux);                   
                } 

                rep = false;
            }       

            if(rep == false){
                vet[i].cpf = cpfAux;
            }           



        printf("Insira o nascimento:");
        gets(vet[i].nascimento);


        printf("Insira o salario:");
        scanf("%f", &vet[i].salario);               
        fflush(stdin);
    }

}

int pesquisa(){

    printf("Insira um colaborador a ser pesquisado:");
    scanf("%s", &nomePesquisa);

    for(i=0; i<2; i++){     
        if(strcmp(nomePesquisa,vet[i].nome) == 0){
            printf("Nome: %s\n", vet[i].nome);
            printf("CPF: %s\n", vet[i].cpf);
            printf("Nascimento: %s\n", vet[i].nascimento);
            printf("Salario: %2.f\n", vet[i].salario);
            exit(0);
        } else {
            contPesquisa++;
        }
    }

    if(contPesquisa > 0){
        printf("Colaborador nao encontrado.");
    }

}


int main(int argc, char *argv[]) {

    cadastra(); 
    pesquisa(); 

    return 0;
}

I tested the code using int for cpf and it worked. The problem is when I enter 10-12-15 digits. I tried to use type double , but when the first character is zero-0, it does not store.

How can I fix this? Where am I going wrong?

c

asked by anonymous 15.10.2017 / 00:06

2 answers

2

Instead of:

vet[i].cpf = cpfAux;

You should use:

strcpy(vet[i].cpf, cpfAux);

This method copies the value of cpfAux and assigns it to vet[i].cpf .

15.10.2017 / 00:18

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score 2 · Accepted Answer

In C , it is not possible to copy the content of buffers containing strings ending in array types ( = ) using the assignment operator string.h .

The header default strcpy() provides a complete interface for string manipulation.

This interface has a function called string.h , capable of copying the contents of one buffer to another.

To solve your problem, you should first include the %code% header in your program:

#include <string.h>

Then, replace the line where the error occurs by:

strcpy( vet[i].cpf, cpfAux );