Задачи с семинара "Основы и методология программирования""

// Задача 1
#include<stdio.h>

int main() {
    float r = 0.0;
    float h = 0.0;
    printf("Enter radius and height: ");
    scanf("%f %f", &r, &h);
    printf("V=%f\n", (3.14 * r  * r * h));
    return 0;
}

// Задача 2
#include<stdio.h>

int main() {
    float r = 0.0;
    float h = 0.0;
    printf("Enter radius and height: ");
    scanf("%f %f", &r, &h);
    printf("V=%f\n", (2 * 3.14 * r * r) + (2 * 3.14 * r * h));
    return 0;
}

// Задача 3
#include<stdio.h>

int main() {
    int m = 0;
    printf("Enter time in minutes: ");
    scanf("%d", &m);
    printf("Hours: %d, minutes: %d\n", (m / 60), (m % 60));
    return 0;
}
// Задача 4
#include<stdio.h>

int main() {
    float m = 0.0;
    printf("Enter mass in pounds: ");
    scanf("%f", &m);
    printf("Mass in kilos: %f\n", m * 0.4059);
    return 0;
}
// Задача 5
#include<stdio.h>

int main() {
    float d = 0.0;
    printf("Enter distance in versts: ");
    scanf("%f", &d);
    printf("Distance in kilometers: %f\n", d * 0.10668);
    return 0;
}
// Задача 6
#include<stdio.h>

int main() {
    float r = 0;
    float u = 0;
    printf("Enter resistance and voltage: ");
    scanf("%f %f", &r, &u);
    if (r != 0 ){
        printf("Strength: %f\n", u / r);
    }
    else {
        printf("Strength equals infinity\n");
    }
    return 0;
}
// Задача 7
#include<stdio.h>

int main() {
    float p = 0;
    printf("Enter price for 100 gramms: ");
    scanf("%f",  &p);
    printf("Price for kilo=%f\n", 10 * p);
    return 0;
}
// Задача 8
#include<stdio.h>

int main() {
    float r1 =0;
    float r2 = 0;
    printf("Enter resistance for 1st and 2nd resistors: ");
    scanf("%f %f", &r1, &r2);
    if((r1 + r2) !=0 ){
        printf("Resistance: %f\n", (r1 * r2) / (r1 + r2));
    }
    else {
        printf("Zeo\n");
    }
    return 0;
}
// Задача 9
#include<stdio.h>

int main() {
    float a = 0;
    float b = 0;
    printf("Enter a and b: ");
    scanf("%f %f",  &a, &b);
    printf("S=%f", (a * b));
    return 0;
}
// Задача 10
#include<stdio.h>

int main() {
    float m = 0;
    float p = 0;
    printf("Enter mass of apples and price for kilo: ");
    scanf("%f %f",  &m, &p);
    printf("Total price=%f\n", (m * p));
    return 0;
}
// Задача 11
#include<stdio.h>

int main() {
    float s = 0;
    float b = 0;
    float p = 0;
    // printf("Enter mass of apples and price for kilo: ");
    scanf("%f %f %f",  &s, &b, &p);
    if(b !=0 ){
        printf("Total price=%f\n", (2 * s) / b * p);
    }
    else {
        printf("b cannot be 0");
    }

    return 0;
}
// Задача 12
#include<stdio.h>

int main() {
    float a = 0;
    float b = 0;
    float c = 0;
    printf("Enter a, b and c: ");
    scanf("%f %f %f",  &a, &b, &c);
    printf("%f", a * b * c);
    return 0;
}