HomeWork C Day1

#include <stdio.h>
#include <math.h>
#include <limits.h>

int main(){
    //zadacha 1

    /*
    float a, b, x;
    printf("a = ");
    scanf("%f", &a);
    printf("b = ");
    scanf("%f", &b);

    if(a == 0 && b == 0){
        printf("x = 0\n");
    }else if(a != 0){
        x = -b / a;
        printf("x = %.2f\n", x);
    }else if(a == 0 && b != 0){
        printf("No solution");
    }
    */

    //zadacha 2

    /*
    float a, b, c, D, x1, x2;
    printf("a = ");
    scanf("%f", &a);
    printf("b = ");
    scanf("%f", &b);
    printf("c = ");
    scanf("%f", &c);

    D = b*b - 4*a*c;

    if(fabs(D) < 0.001){
        x1 = x2 = -b / (2*a);
        printf("x1 = x2 = %.2f\n", x1);
    }else if(D > 0){
        x1 = (-b + sqrt(D)) / (2*a);
        x2 = (-b - sqrt(D)) / (2*a);
        printf("x1 = %.2f\nx2 = %.2f\n", x1, x2);
    }else if(D < 0){
        printf("No real roots");
    }
    */

    //zadacha 3

    /*
    int n, num, sum = 0, max = INT_MIN, min = INT_MAX;
    double avg;

    printf("Enter n: ");
    scanf("%d", &n);

    for(int i = 0; i < n; i++){
        scanf("%d", &num);
        sum += num;
        max = num > max ? num : max;
        min = num < min ? num : min;
    }

    avg = (double)sum / n;

    printf("Sum: %d\nMax: %d\nMin: %d\nAvg: %.2f\n", sum, max, min, avg);
    */

    //zadacha 4

    /*
    float a, b ,c, P, S;

    printf("a = ");
    scanf("%f", &a);
    printf("b = ");
    scanf("%f", &b);
    printf("c = ");
    scanf("%f", &c);

    if(a > 0 && b > 0 && c > 0 && a + b > c && a + c > b && b + c > a){
        P = a + b + c;
        printf("P = %.2f\n", P);

        S = sqrt(P/2 * ((P/2) - a) * ((P/2) - b) * ((P/2) - c));
        printf("S = %.2f\n", S);

        if(a == b && b == c && c == a){
            printf("Triangle is equilateral!\n");
        }else if(a == b || a == c || b == c){
            printf("Triangle is isosceles!\n");
        }else if(a != b && b != c && c != a){
            printf("Triangle is scalene!\n");
        }

        if((a*a) + (b*b) == c*c){
            printf("Triangle is rectangular!");
        }else if((a*a) + (b*b) > c*c){
            printf("Triangle is acute!");
        }else if((a*a) + (b*b) < c*c){
            printf("Triangle is obtuse!");
        }
    }else{
        printf("Not a triangle!");
    }
    */

    //zadacha 5

    /*
    int num;
    printf("Enter number: ");
    scanf("%d", &num);
    int i = 1;
    int flag = 0;
    while(i <= num){
       if(i == num){
         flag = 1;
         break;
       }

       i*=2;
    }

    if(flag){
        printf("%d is power of 2", num);
    }else{
        printf("%d is not power of 2", num);
    }
    */

    //zadacha 6

    /*
    float a, b, result;
    char op;

    printf("Enter operation: ");
    scanf("%c", &op);

    printf("a = ");
    scanf("%f", &a);
    printf("b = ");
    scanf("%f", &b);

    if(op == '+'){
        result = a + b;
    }else if(op == '-'){
        result = a - b;
    }else if(op == '*'){
        result = a * b;
    }else if(op == '/'){
        if(b == 0){
            printf("Divide by 0 error!!!");
        }
        result = a / b;
    }

    printf("Result = %f", result);
    */

    return 0;
}