Variable type float does not receive valuation

Question

Variable type float does not receive valuation

Asked 7 years, 6 months ago

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Follows an excerpt from the code:

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

#define MVAIN  0.8592;
#define MVAOUT 1.0282;
#define ICMS 0.29;

float ProdValue = 0, MVA = 0, ResultValue1 = 0, ResultValue2 = 0, ResultValue3 = 0;

int main(){
    printf("Indique o valor dos produtos da nfe que contenham ST \n");
    scanf ("%f", &ProdValue);   

    printf ("O valor dos produtos é:  %f \n ", &ProdValue);


    printf ("Informe se o MVA é fora ou dentro do estado \n");
    scanf ("%f", &MVA) ;


if(MVA == 1) {
    ResultValue1 =  ProdValue*MVAIN; //926,23
    ResultValue2 =  ResultValue1+ProdValue; //2004,25

    ResultValue3 =  ResultValue2*ICMS; //581,23
    ResultValue2 =  ResultValue1-ResultValue2; //345,00

    printf ("O valor a recolher é %0.2f \n", ResultValue2);


    } if (MVA == 2) {
        ResultValue1 =  ProdValue*MVAOUT; //926,23
        ResultValue2 =  ResultValue1+ProdValue; //2004,25

        ResultValue3 =  ResultValue2*ICMS; //581,23
        ResultValue2 =  ResultValue1-ResultValue2; //345,00


        printf ("O valor a recolher é %0.2f \n", ResultValue2);

1

What is the problem? Note that monetary value cannot be float but I don’t think this is the problem. http://answall.com/q/38138/101. This code neither compiles. What value should you enter to test?

– Maniero

2017/03/19 at 17:56
It even compiles, actually missing the code snippet, note that it ends in a "printf", I have his exe here, however the float values do not receive the stipulated value, for example 1078.02. When I try to assign this value he does not receive. I tried to print on the screen the values however remain zeroed even after the assignments, this for attribution by input as direct.

– xDjulio

2017/03/19 at 19:30
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– Maniero

2017/03/23 at 03:54

1 answer

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by Maniero • **444,682** points · Answer 1 · 2017-03-19T20:13:25+00:00

In a good compiler the code does not even compile. If compile is worse because the code is full d errors. I will not even mention the fact of store monetary value with float be a mistake. The code is confusing, too complicated and has logic error. I improved, but it is not good yet. It was not very clear the error, after I fix the errors that prevented the compilation no error happened.

#include <stdio.h>

#define MVAIN  0.8592f
#define MVAOUT 1.0282f
#define ICMS 0.29f

int main(){
    printf("Indique o valor dos produtos da nfe que contenham ST\n");
    float ProdValue = 0;
    scanf("%f", &ProdValue);   
    printf("O valor dos produtos é: %0.2f\n", ProdValue);
    printf("Informe se o MVA é fora ou dentro do estado\n");
    int MVA = 0;
    scanf("%d", &MVA);
    float ValorMVA = ProdValue * (MVA == 2 ? MVAOUT : MVAIN);
    printf ("O valor do MVA é %0.2f\n", ValorMVA);
    float ValorComMVA = ProdValue + ValorMVA;
    printf ("O valor total é %0.2f\n", ValorComMVA);
    float ValorIcms = ValorComMVA * ICMS;
    printf ("O valor do ICMS é %0.2f\n", ValorIcms);
    float Diferenca = ValorMVA - ValorIcms;
    printf ("O valor a recolher é %0.2f\n", Diferenca);
}

Behold working in the ideone. And in the repl it.. Also put on the Github for future reference.