Problem with the calculation of the average in C language

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Problem with the calculation of the average in C language

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#1 by (2 votes)

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I'm doing this exercise:

4 - Write an algorithm that reads a set of 50 tokens each   containing the height and sex of a person (1 = male and 2 =   feminine), and calculate and print:


The highest and lowest height of the class;



The average height of women;



The average height of the class.

Everything is running correctly, less the average for women.

#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 i, somamulher, somaturma, genero[4];
    float maioralt=0, menoralt=999, mediaaltmulher, medaltturma, altura[4];


    printf("\n\n #######################################");
    printf("\n\n           ANÁLISE DE FICHAS");
    printf("\n\n #######################################");


    for(i=0; i<4; i++)
    {
        printf("\n\n ------------------------------------------------------------------");
        printf("\n\n (%i) - Qual seu gênero (1 - Masculino / 2 - Feminino): ", i+1);
        scanf("%i", &genero[i]);

        printf("\n (%i) - Insira sua altura: ", i+1);
        scanf("%f", &altura[i]);

        somaturma = somaturma + altura[i];
        system("cls");
    }

    //MEDIA MULHER
    if(genero[i] = 2)
    {
        somamulher = somamulher + 1;
    }

    mediaaltmulher = somamulher / 4;

    //MAIOR ALTURA TURMA
    for(i=0; i<4; i++)
    {
        if(altura[i] > maioralt)
        {
            maioralt = altura[i];
        }
    }

    //MENOR ALTURA TURMA    
    for(i=0; i<4; i++)
    {
        if(altura[i] < menoralt)
        {
            menoralt = altura[i];
        }
    }

    //MEDIA ALTURA TURMA
    medaltturma = somaturma / 4;


    printf("\n\n ****************************************************");
    printf("\n\n               R E S U L T A D O S");
    printf("\n\n ****************************************************");
    printf("\n A média de altura das mulheres é: %0.1f", mediaaltmulher);
    printf("\n A maior altura da turma é: %0.1f", maioralt);
    printf("\n A menor altura da turma é: %0.1f", menoralt);
    printf("\n A média de altura da turma é: %0.1f", medaltturma);      
}

c algoritmo

asked by anonymous 26.10.2018 / 19:26

1 answer

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score 2 · Accepted Answer

The code is very confusing and this helps make it difficult to understand. The biggest problem is that she is counting the amount of women, but not accumulating heights, there is no way to calculate the average correctly. Simply put, the code would look like this:

#include <stdio.h>
#define QUANTIDADE 4

int main() {
    printf("#######################################");
    printf("\n           ANÁLISE DE FICHAS");
    printf("\n#######################################");
    int contaMulher = 0;
    float maiorAltura = 0, menorAltura = 999, somaMulher = 0, somaAltura = 0;
    for (int i = 0; i < QUANTIDADE; i++) {
        printf("\n ------------------------------------------------------------------");
        printf("\n (%d) - Qual seu gênero (1 - Masculino / 2 - Feminino): ", i + 1);
        int genero;
        scanf("%d", &genero);
        printf("\n (%d) - Insira sua altura: ", i + 1);
        float altura;
        scanf("%f", &altura);
        somaAltura += altura;
        if (genero == 2) {
            somaMulher += altura;
            contaMulher++;
        }
        if (altura > maiorAltura) maiorAltura = altura;
        if (altura < menorAltura) menorAltura = altura;
    }
    printf("\n****************************************************");
    printf("\n               R E S U L T A D O S");
    printf("\n****************************************************");
    printf("\n A média de altura das mulheres é: %0.1f", somaMulher / contaMulher);
    printf("\n A maior altura da turma é: %0.1f", maiorAltura);
    printf("\n A menor altura da turma é: %0.1f", menorAltura);
    printf("\n A média de altura da turma é: %0.1f", somaAltura / QUANTIDADE);      
}

See running on ideone . And at Coding Ground . Also put it in GitHub for future reference .