Calculate and display the Array in C (dev c ++)

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I have to do this:

  

Make a program that loads a 12x4 array with the values of the   store, where each row represents one month of the year and each row   column represents a week of the month. Calculate and show;

     

  • the total sold in each month of the year, showing the month's name in full;

    •   

  • the total sold every week throughout the year;

    •   

  • The total sold by the store in the year.

    •   

The total of the year worked out, but the other two results can not, the numbers do not appear right. I really do not know how to proceed: (

This is my code: 

#include <stdio.h> 
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <conio.h>
#include <time.h>
#include <locale.h>


int main ()
{
    setlocale(LC_ALL, "PORTUGUESE");

int mat[12][4], l, c, totalsemana, totalano, jan, fev, mar, abr, mai, jun, jul, ago, set, out, nov, dez;
char mes;

//PEDIR VALORES
for(l=0; l<12; l++)
{
    for(c=0; c<4; c++)
    {
        printf("\n________________________________________________________________");
        printf("\n\n Insira o valor das vendas do mês %i - semana %i - posição [%i][%i]: ", l+1, c+1, l+1, c+1);
        scanf("%i", &mat[l][c]);

        totalano = totalano + mat[l][c];
    }
}

for(l=0; l<12; l++)
{
    for(c=0; c<4; c++)
    {   
        jan = jan + mat[1][c]; 
        fev = fev + mat[2][c];
        mar = mar + mat[3][c];
        abr = abr + mat[4][c];
        mai = mai + mat[5][c];
        jun = jun + mat[6][c];
        jul = jul + mat[7][c];
        ago = ago + mat[8][c];
        set = set + mat[9][c];
        out = out + mat[10][c];
        nov = nov + mat[11][c];
        dez = dez + mat[12][c];
    }
}


printf("\n\n ################### R E S U L T A D O S #####################");

printf("\n\n ****************************************************");
printf("\n\n   O total vendido no ANO é: %i", totalano);


//MOSTRAR EM CADA SEMANA
printf("\n\n ****************************************************");
printf("\n\n O total vendido em cada SEMANA é: ");
for(c=0; c<4; c++)
{
    for(l=0; l<12; l++)
    {       
        printf("\n------------------------------------");
        printf("\n Mês %i - semana %i: ", l+1, c+1);
        printf("%i", mat[l][4]);
    }
}

printf("\n\n ****************************************************");

//MOSTRAR CADA MES
printf("\n\n O total de venda em cada MÊS no ano é: ");
printf("\n Janeiro: %i", jan);
printf("\n Fevereiro: %i", fev);
printf("\n Março: %i", mar);
printf("\n Abril: %i", abr);
printf("\n Maio: %i", mai);
printf("\n Junho: %i", jun);
printf("\n Julho: %i", jul);
printf("\n Agosto: %i", ago);
printf("\n Setembro: %i", set);
printf("\n Outubro: %i", out);
printf("\n Novembro: %i", nov);
printf("\n Dezembro: %i", dez);

printf("\n\n ****************************************************");

}

    
asked by anonymous 26.10.2018 / 22:21

1 answer

0

I found several errors in your code, here they are: First, the variables where you are saving the amount collected each month need to be initialized, like this: 

int mat[12][4], l, c, totalsemana, totalano, jan = 0, fev = 0, mar = 0, abr = 0, mai = 0, jun = 0, jul = 0, ago = 0, set = 0, out = 0, nov = 0, dez = 0;

Second, your second loop is wrong, here it is: 

//for(l=0; l<12; l++){
    for(c=0; c<4; c++){   
        jan += mat[1][c]; 
        fev += mat[2][c];
        mar += mat[3][c];
        abr += mat[4][c];
        mai += mat[5][c];
        jun += mat[6][c];
        jul += mat[7][c];
        ago += mat[8][c];
        set += mat[9][c];
        out += mat[10][c];
        nov += mat[11][c];
        dez += mat[12][c];
    }
//}

Finally, the indexing on the loop that shows each week is incorrect, here's how it should look: 

printf("\n------------------------------------");
printf("\n Mês %i - semana %i: ", l+1, c+1);
printf("%i", mat[l][c]);

A tip: indent your code, this helps you maintain it and read it by third parties.

    
27.10.2018 / 23:47
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