Zadaci II

// 1. ZADATAK
#include <stdio.h>
main()
{
    int n,j,i;
    scanf("%d",&n);
    printf("Broj 1 je prost\n");
    for (i=2;i<n;i=i+1)
    {
        j=2;
        while (i%j!=0 && j<i)
        {
            j=j+1;
        }
        if (i==j)
            printf("Broj %d je prost\n",i);
    }
}
// 2. ZADATAK
#include <stdio.h>
main()
{
    int x,s=0,a=1,b=1,n,i;
    scanf("%d",&n);
    for (i=3;i<=n;i=i+1)
    {
        x=a+b;
        a=b;
        b=x;
        if (i%2==0)
        s=s+x;
    }
    printf("Suma je %d",s);
}
// 3. ZADATAK
#include <stdio.h>
main()
{
    int i,g,z,j,d,s,n;
    scanf("%d",&n);
    for (i=100;i<n;i=i+1)
    {
        g=2;
        j=i%10;
        s=i/100;
        d=(i/10)%10;
        z=j+s+d;
        while (z%g!=0 && g<z)
            g=g+1;
        if (g==z)
            printf("Zbir cifara trocifrenog broja %d je prost\n",i);
    }
}
// 4. ZADATAK
#include <stdio.h>
main()
{
    int i,z,k,j,d,s;
    scanf("%d",&k);
    for (i=100;i<1000;i=i+1)
    {
        j=i%10;
        d=(i/10)%10;
        s=i/100;
        z=j+d+s;
        if (i%k==0 && z==17)
            printf("Ovaj broj se uklapa: %d \n",i);
    }
}
// 5. ZADATAK
#include <stdio.h>
main()
{
    long int b,z=0,f,g;
    scanf("%d",&b);
    printf("Hexa %x, Oktalno %o\n",b,b);
    while ((b/10)!=0)
    {
        g=b%10;
        f=(b/10)%10;
        z=z+g+f;
        b=b/100;
    }
    printf("Zbir cifara je %d\n",z);
}
// 6. ZADATAK
#include <stdio.h>
main()
{
    long int i,n,k,j;
    double p=1;
    scanf("%d",&n);
    for (i=1;i<=n;i=i+1)
    {
        p=p*i;
        printf("Faktorijel broja %d je: %f\n",i,p);
    }
    i=1;
    p=1;
    for (i=1;i<=n;i=i+1)
    {
        p=1;
        k=i*i;
        for (j=1;j<=k;j=j+1)
            p=p*j;
        printf("Faktorijel kvadrata broja %d je: %e\n",i,p);
    }
}
// 7. ZADATAK
#include <stdio.h>
#include <math.h>
main()
{
    int i;
    float n,y;
    scanf("%f",&n);
    for (i=-n;i<=n;i=i+1)
    {
        if (i<0)
            y=i*i;
        else
            if (i<1)
                y=i;
            else
                y=sqrt(i);
        printf("Za n= %d, y= %f\n",i,y);
    }
}
// 8. ZADATAK
#include <stdio.h>
#include <math.h>
main()
{
    float x=0,e,p;
    scanf("%f",&e);
    do
    {
        p=x;
        x=(3*pow(p,4)+4*pow(p,2)-4)/(4*pow(p,3)+8*p-9);
    }
    while ((fabs(x-p))>e);
    printf("Dobija se broj: %f",x);
}
// 9. ZADATAK
#include <stdio.h>
#include <math.h>
main()
{
    int n=0;
    float x,e,y,p;
    scanf("%f%f",&x,&e);
    do
    {
        if (n==0)
            p=1;
        else
            p=p*n;
        y=(pow(x,n))/p;
        n=n+1;
    }
    while (y>=e);
    printf("Dobija se broj: %f",y);
}
// 10. ZADATAK
#include <stdio.h>
main()
{
    float a,b;
    char op;
    scanf("%f%c%f",&a,&op,&b);
    switch (op)
    {
    case '+':
        printf("A + B =%f",a+b);
        break;
    case '-':
        printf("A - B =%f",a-b);
        break;
    case '*':
        printf("A * B =%f",a*b);
        break;
    case '/':
        printf("A / B =%f",a/b);
        break;
    }
}