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What can I do? variable not declared in function?
1 answer
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You have to declare the variables day, month and year within main to be able to send them as function parameters.
Validation within int Date will need to be a conditional: if(dia > 0 && mes > 0 && ano > 0) if you get into that if you give a return 1; for real and in the else one return 0; for false.
On main you check if(Data(dia, mes, ano) == 1), if you enter this condition you call the function int valido that will need parameters as well.
Will stay like this:
int data(int dia, int mes, int ano)
{
if(dia > 0 && mes > 0 && ano > 0)
return 1; //Os valores são válidos.
else
return 0; //Algum dos valores ou todos são inválidos.
}
int valido(int dia, int mes, int ano)
{
printf("Curitiba, %i/%i/%i \n", dia, mes, ano);
return 1;
}
int main()
{
int dia, mes, ano;
printf("Digite o dia, mes e ano consecutivamente: ");
scanf("%i %i %i", &dia, &mes, &ano);
if(data(dia, mes, ano) == 1)
{
printf("\nA data eh: \n\n");
valido(dia, mes, ano);
}
else
printf("\nValores invalidos. \n");
return 0;
}
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What went through your mind when you did
validacao = dia, mes, ano>0;? Review the syntax used by the C language. You are making areturn Data;but did not define the variableData.– anonimo
In the second row of the Data vc function you are using the operator
,(comma). It works to concatenate instructions and returns the value of the last.validacao = dia, mes, ano>0would be the same asdia != 0; mes != 0; validacao = ano > 0;, that is, n makes no sense. Right would bevalidacao = dia > 0 && mes > 0 && ano > 0;. Invoid main()you need to create the variablesint dia, mes ano;and inint Data()you need to return an integer number.– aviana