Answer to Question #308761 in C for Samman

Question

Write a C program to calculate the area and perimeter of triangle, square, circle and rectangle

by using the switch case statements.(Uses nested switch case statements).

Answer 1

#include <stdio.h>
#include <math.h>
    
int main()
{
    char sel;
    int a, b, c, p, pp;
    float s;
      sel='1';
    while (sel != '5'){
    printf("\nSelect options: \n");
    printf("(1) Area and perimeter of triangle \n");
    printf("(2) Area and perimeter of square \n");
    printf("(3) Area and perimeter of circle \n");
    printf("(4) Area and perimeter of rectangle \n");
    printf("(5) exit \n");
    printf("\nChoise:\n");
    sel = getchar();
    switch(sel){
    case '1':
    printf("\n.........Area and perimeter of triangle........\n\n");
    printf("Enter side a: ");
    scanf("%d", &a);
    printf("Enter side b: ");
    scanf("%d", &b);
    printf("Enter side c: ");
    scanf("%d", &c);
    p = a+b+c;
    pp = p/2;
       s = sqrt(pp*(pp-a)*(pp-b)*(pp-c));
    printf("\nArea: %.2f \nPerimetr: %d\n", s, p);
    break;
    case '2':
    printf("\n.........Area and perimeter of square........\n\n");
    printf("Enter side square: ");
    scanf("%d", &a);
    p = (2 * a) + (2 * a);
       s = a * a;
    printf("\nArea: %.2f \nPerimetr: %d\n", s, p);
    break;
    case '3':
    printf("\n.........Area and perimeter of circle........\n\n");
    printf("Enter radius: ");
    scanf("%d", &a);
    p = 2 * 3.14 * a;
       s = 3.14 * (a * a);
    printf("\nArea: %.2f \nLength: %d\n", s, p);
    break;
    case '4':
    printf("\n.........Area and perimeter of rectangle........\n\n");
    printf("Enter side a: ");
    scanf("%d", &a);
    printf("Enter side b: ");
    scanf("%d", &b);
    p = (2 * a) + (2 * b);
       s = a * b;
    printf("\nArea: %.2f \nPerimetr: %d\n", s, p);
    break;
    case '5':
    break;
        }
    fflush(stdin);
    }
    return 0;
}