C program to solve Class 8 Mathematical problems

This project was a brainchild of our professor .... so this project came into existence.

Github Link to the project is: https://github.com/aditya0072001/C8Program

There is the code for the menu:

	#include<stdio.h>
	#include<conio.h>
	#include"Algebra.h"
	#include"mesuration.h"
	#include"trigometry.h"
	#include"arithmetic.h"
	int main()
	{
	//choices
	int choice,a,b,c;
	char choice5,choice2,choice3,choice4;
	int flag,flag2,flag3,flag4,flag5;
	//Mensuration.c declaration
	int l,br; //Length and breath of rectangle
	int rarea,rperimeter; //rectangle area and perimeter
	int sqside,sarea,sperimeter; //square side,area and perimeter
	int srhombus,d1rhombus,d2rhombus; //Rhombus side digonals
	int rharea,rhperimeter; //Rhombus area and perimeter
	//Algebra.c declaration
	int aplusbs; //a+b square
	int aplusbc; //a+b cube
	//Arithmetic.c declaration here
	int a2,b2;
	int add,minus,mul,div;
	float a3,b3;
	//Trigometry.c declaration1
	double si,cs,tn;
	double degree;
	printf("\n::::::It's not who I am underneath, but what I do that defines me:::::\n");
	printf("\nThis program does the following functions\n1.Algebra\n2.Trignometry\n3.Mesuration\n4.Arithemetic\n\nPress Esc for exit \t:");
	choice=getche();
	do{ //loop for repeation of menu of choice1
	switch(choice)
	{
	case '1': //Declared in algebra.c
	printf("\na.Square of (A+B)\nb.Cube of (A+B)\n0.For going back\n\nPress Esc for exit \n");
	choice3=getche();
	do{ //Loop for choice3
	switch(choice3)
	{
	case 'a':
	printf("\nEnter 2 numbers \t:");
	scanf("%d%d",&a,&b);
	aplusbs=aplusbsqr(a,b);
	printf("\nAnswer is %d \n\nPress Esc for exit" ,aplusbs);
	flag=getch();
	break;
	case 'b':
	printf("\nEnter 2 numbers \t:");
	scanf("%d%d",&a,&b);
	aplusbc=aplusbcube(a,b);
	printf("\nAnswer is %d \n\nPress Esc for exit ",aplusbc);
	flag=getch();
	break;
	}
	}while((((choice3<a)||(choice3>b))&&flag=='27')&&flag=='0');
	break;
	case '2': //Declared in trigonmetry.c
	printf("\ni.Sin Value\nj.Cos Value\nk.Tan Value \n\nPress Esc for exit \t:");
	choice5=getche();
	do{ //Loop for choice5
	switch(choice5)
	{
	case 'i':
	printf("Enter the degree \t:");
	scanf("%lf",&degree);
	si=sin(degree);
	printf("Answer is %lf \n0.For going bac\n\nPress Esc for exit ",si);
	flag2=getch();
	break;
	case 'j':
	printf("Enter the degree \t:");
	scanf("%lf",&degree);
	cs=cos(degree);
	printf("Answer is %lf \n0.For going bac\n\nPress Esc for exit ",cs);
	flag2=getch();
	break;
	case 'k':
	printf("Enter the degree \t:");
	scanf("%lf",&degree);
	tn=tan(degree);
	printf("Answer is %lf \n0.For going bac \n\nPress Esc for exit ",tn);
	flag2=getch();
	break;
	}
	}while((((choice5<'i')||(choice5>'k'))&&flag2=='27')&&flag2=='0');
	break;
	case '3': //Declared in mesuration.c
	printf("\nA.RectangleOperations\nB.SquareOperations\nC.RhombusOperations\n0.For going back \n\nPress Esc for exit \t:");
	choice2=getche();
	do{ //loop for repeation of menu of choice2
	switch(choice2)
	{
	case 'A':
	printf("\nEnter the length and breath of rectangle \t:");
	scanf("%d%d",&l,&br);
	rarea=arearectangle(l,br);
	rperimeter=perimeterrectangle(l,br);
	printf("\nArea =%d and Perimeter =%d \n0.For going back \n\nPress Esc for exit ",rarea,rperimeter);
	flag3=getch();
	break;
	case 'B':
	printf("\nEnter side of Square \t:");
	scanf("%d",&sqside);
	sarea=areasquare(sqside);
	sperimeter=perimetersquare(sqside);
	printf("\nArea =%d and Perimeter =%d \n 0.For going back\nPress Esc for exit ",sarea,sperimeter);
	flag3=getch();
	break;
	case 'C':
	printf("\nEnter the diagonals and side of rhombus \t:");
	scanf("%d%d%d",&d1rhombus,&d2rhombus,&srhombus);
	rharea=arearhombus(d1rhombus,d2rhombus);
	rhperimeter=perimeterrhombus(srhombus);
	printf("\nArea =%d and Perimeter =%d \n0.For going back\n\nPress Esc for exit ",rharea,rhperimeter);
	flag3=getch();
	break;
	}
	}while(((((choice2<'A')||(choice2>'C'))&&flag3=='27'))&&flag3=='0');
	break;
	case '4': //Declared in arithmetic.c
	printf("\ne.Sum\nf.Substraction\ng.Multiply\nh.Division \n0.For going back \n\nPress Esc for exit \t:");
	choice4=getche();
	do{ //Loop for choice4
	switch(choice4)
	{
	case 'e':
	printf("\nEnter two numbers \t:");
	scanf("%d%d",&a2,&b2);
	add=sum(a2,b2);
	printf("\nAnswer is %d \n0.For going back \n\nPress Esc for exit ",add);
	flag4=getch();
	break;
	case 'f':
	printf("\nEnter two numbers \t:");
	scanf("%d%d",&a2,&b2);
	minus=substract(a2,b2);
	printf("\nAnswer is %d \n0.For going back\n\nPress Esc for exit ",minus);
	flag4=getch();
	break;
	case 'h':
	printf("\nEnter two numbers \t:");
	scanf("%d%d",&a2,&b2);
	mul=multiply(a2,b2);
	printf("\nAnswer is %d \n\nPress Esc for exit ",mul);
	flag4=getch();
	break;
	case 'g':
	printf("\nEnter two numbers \t:");
	scanf("%f%f",&a3,&b3);
	div=divison(a3,b3);
	printf("\nAnswer is %d \n0.For going back\n\nPress Esc for exit ",div);
	flag4=getch();
	break;
	}
	}while((((choice4<'e')||(choice4>'g'))&&flag=='27')&&flag=='0');
	break;
	}
	}while(((choice<'1')||(choice>'4'))&&choice4=='27');
	return 0;
	}

view raw Menu.c hosted with ❤ by GitHub

      

Others included header files like arithematic.h can be found on my GitHub page.
The code is not perfect by any means like the back button is still broken.

The improvements are to be made