PISMENI ISPIT - 26.1.2018. (A)

//PISMENI ISPIT - 26.1.2018. (A)

//1. zadatak --------------------------------------------------------------------------------------------------------------------------
#include <stdio.h>
#include <stdlib.h>
#include <time.h>

int main()
{
    int i, j, m, n;
    float max, zbroj = 0;
    float polje[18][20];

    do {
        printf("Unesite m: ");
        scanf("%d", &m);
    } while (m < 10 || m >= 19);

    do {
        printf("Unesite n: ");
        scanf("%d", &n);
    } while (n < 11 || n > 20);

    srand((unsigned)time(NULL));

    for (i = 0; i < m; i++)
    {
        for (j = 0; j < n; j++)
        {
            polje[i][j] = -10 + (float)rand() / RAND_MAX * (10 + 20); //a[i] = DG + (float)rand() / RAND_MAX * (GG - DG);
        }
    }

    for (i = 0; i < m; i++)
    {
        for (j = 0; j < n; j++)
            printf("%.2f\t", polje[i][j]);
        printf("\n");
    }

    max = polje[0][0];

    for (j = 0; j < n; j++)
    {
        for (i = 0; i < m; i++)
        {
            if (polje[i][j] > max)
                max = polje[i][j];
        }

        zbroj += max;
    }

    printf("%.2f\n", zbroj);

    return 0;
}

//2. zadatak --------------------------------------------------------------------------------------------------------------------------
#include <stdio.h>
#include <stdlib.h>
#include <time.h>

int faktorijel (int n)
{
    int f = 1, i;
    int digit, sum = 0;

    if(n < 0)
    {
        return -1;
    }

    for (i = 2; i <= n; i++)
    {
        f *= i;
    }

    while(f > 0)
    {
        digit = f % 10;
        sum += digit;
        f = f / 10;
    }

    return sum;
}

int main ()
{
    int a = 11, b;

    b = faktorijel(a);
    printf("%d", b);

    return 0;
}

//3. zadatak --------------------------------------------------------------------------------------------------------------------------
#include <stdio.h>
#include <stdlib.h>
#include <time.h>

int funkcija(long int polje[])
{
    int i, digit, product = 1, posnum, pospro;

    int max = polje[0];
    for(i = 0; i < 204; i++)
    {
        if(polje[i] > max)
        {
            max = polje[i];
            posnum = i;
        }
    }

    while(polje[0] > 0)
    {
        digit = polje[i] % 10;
        product *= digit;
        polje[i] = polje[i] / 10;
    }
    int maxproduct = product;
    pospro = 0;

    for(i = 1; i < 204; i++)
    {
        while(polje[i] > 0)
        {
            digit = polje[i] % 10;
            product *= digit;
            polje[i] = polje[i] / 10;
        }

        if(product > maxproduct)
        {
            maxproduct = product;
            pospro = i;
        }
    }

    if(posnum == pospro)
    {
        return 1;
    }
    else
        return 0;
}

int main()
{
    int i, n;
    long int *polje;

    polje = (long int *)malloc(204);

    srand((unsigned)time(NULL));

    for (i = 0; i < 204; i++)
    {
        polje[i] = -750 + (float)rand () / RAND_MAX * (1500);
    }

    n = funkcija(polje);
    printf("%d", n);

    return 0;
}

//4. zadatak --------------------------------------------------------------------------------------------------------------------------
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <math.h>

float izracun(float *polje)
{
    int i;
    float temp;

    for (i = 1; i < 9; i++)
    {
        temp = (float)pow(polje[i], -2) + 0.1;
    }

    return (1 - polje[0] + temp - polje[i + 1]);
}

int main()
{
    int i;
    float *p, polje[10];

    srand((unsigned)time(NULL));
    for (i = 0; i < 10; i++)
    {
        polje[i] = -5.12 + (float)rand() / RAND_MAX * 10.24;
    }

    p = polje;
    printf("%.2f\n", izracun(p));

    return 0;
}

//5. zadatak --------------------------------------------------------------------------------------------------------------------------
#include <stdio.h>
#include <stdlib.h>
#include <time.h>

void toupper(char *string)
{
    int i;

    for (i = 0; i < '/0'; i++)
    {
        if (string[i] >= 'a' && string[i] <= 'z')
        {
            string[i] = string[i] - 'a' + 'A';
        }
    }

    printf("%s", string);
}

int main(void)
{
    char *string;

    string = (char *)malloc(200);

    printf("Unesite zeljeni string:");
    fgets(string, 200, stdin);

    toupper(string);
    free(string);

    return 0;
}