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#include <stdlib.h>
#include <math.h>
#include <stdio.h>
#define pi 3.1416
main()
{
int ch=0,chc=0,cht=0,chs=0;
float r=0,C=0,Ac=0,Vc=0,S=0,Ps=0,As=0,Vs=0,Pt=0,b=0,h=0,At=0,Vt=0;
do{
system("cls");
printf("Geometric Formulas");
printf("\n1. Circle");
printf("\n2. Square");
printf("\n3. Triangle");
printf("\n4. Exit");
printf("\n \n");
printf("\nChoice: ");
scanf("%d", &ch);
switch(ch){
case 1: //circle
do{
system("cls");
printf("Circle");
printf("\n1. Circumference");
printf("\n2. Area");
printf("\n3. Volume");
printf("\n4. Exit");
printf("\n \n");
printf("\nChoice: ");
scanf("%d", &chc);
switch(chc){
case 1: //Circumference
system("cls");
printf("This Computes the circumference of a circle");
printf("\n\n");
printf("Enter Radius");
scanf("%f", &r);
C=2*pi*r;
printf("The Circumference of a circle with radius %f is %f",r,C);
system("Pause");
break;
case 2: //Area
system("cls");
printf("This Computes the Area of a circle");
printf("\n\n");
printf("Enter Radius");
scanf("%f", &r);
Ac= 2*pi*r*r;
printf("The Area of a circle with radius %f is %f",r,Ac);
system("Pause");
break;
case 3: //Volume
printf("This Computes the Volume of a Sphere");
printf("\n\n");
printf("Enter Radius");
scanf("%f",&r);
Vc= (4/3)*(pi*r*r*r);
printf("The Volume of a sphere with radius %f is %f",r,Vc);
break;
case 4: //exit from chc
return main();
default:
printf("The Operation cannot be done");
break;
}while (chc!=4);
break;
case 2: //square
do{
system("cls");
printf("Square");
printf("\n1. Perimeter");
printf("\n2. Area");
printf("\n3. Volume");
printf("\n4. Exit");
printf("\n \n");
printf("\nChoice: ");
scanf("%d", &chs);
switch(chs){
case 1: //Perimeter Square
system("cls");
printf("This Computes the Perimeter of a Square");
printf("\n\n");
printf("Enter Length of Side");
scanf("%f", &S);
Ps=4*S;
printf("The Perimeter of a Square with side %f is %f",S,Ps);
system("Pause");
break;
case 2: //Area of A Square
system("cls");
printf("This computes the perimeter of a Square");
printf("\n\n");
printf("Enter Length of Side");
scanf("%f",&S);
As= S*S;
printf("The Area of a Square with side %f is %f",S,As);
system("Pause");
break;
case 3: //Volume of A Cube
system("cls");
printf("This computes the volume of a Cube");
printf("\n\n");
printf("Enter Length of Side");
scanf("%f",&S);
Vs= (S*S*S);
printf("The volume of a cube with side %f is %f", S,Vs);
system("Pause");
break;
case 4: //exit from chs
return main();
default:
printf("The Operation cannot be done");
break;
}
}while(chs!=4);
case 3: //triangle
do{
system("cls");
printf("Triangle");
printf("\n1. Perimeter");
printf("\n2. Area");
printf("\n3. Volume");
printf("\n4. Exit");
printf("\n \n");
printf("\nChoice: ");
scanf("%d", &cht);
switch(cht){
case 1: //Perimeter of a Triangle
system("cls");
printf("This computes the Perimeter of a Triangle");
printf("\n\n");
printf("Enter Length of Side");
scanf("%f",S);
Pt= S+S+S;
printf("The Perimeter of a triangle with side %f is %f",S,Pt);
system("Pause");
break;
break;
case 2: // Area of a Triangle
system("cls");
printf("This computes the Area of a triangle");
printf("\n\n");
printf("Enter Base");
scanf("%f",&b);
printf("Enter Height");
scanf("%f",&h);
At= ((b*h)/2);
printf("The Area of a Triangle with Base %f and Height %f is %f",b,h,At);
system("Pause");
break;
break;
case 3: // Volume
system("cls");
printf("This computes the volume of a pyramid");
printf("\n\n");
printf("Enter Area of the base of the Pyramid");
scanf("%f",b);
printf("Enter Height of the Pyramid");
scanf("%f",h);
Vt= b*h;
printf("The Volume of the pyramid with Base Area of %f and Heigh of %f is %f",b,h,Vt);
system("Pause");
break;
break;
case 4: //exit from cht
return main();
default:
printf("The Operation cannot be done");
}
case 4: //exit from ch
}while(ch!=4);
system("PAUSE");
return 0;
}
 