Question

PLease IN C not in C++ or JAVA,

Lab3. Write a computer program in C which will simulate a calculator. Your calculator needs to support the five basic operations (addition, subtraction, multiplication, division and modulus) plus primality testing (natural number is prime if it has no non-trivial divisors).

: Rewrite your lab 3 calculator program using functions. Each mathematical operation in the menu should be represented by a separate function. In addition to all operations your calculator had to support in lab 3, please add additional functionality to your calculator. Include the ability to compute the factorial of an integer (Example: 4! = 1 * 2 * 3 *4 = 24), and an integer power of a number (Example: 53 = 5 * 5 * 5 = 125). Finally, add an interesting mathematical function of your choosing which computes the first n numbers of a sequence of numbers and utilizes an array to store the result before displaying it (Examples of mathematical sequences: Fibonacci, Primes). Example of the output follows:

Calculator Menu:

(1) Addition

(2) Subtraction

(3) Multiplication

(4) Division

(5) Modulus (integers only)

(6) Test if prime (integers only)

(7) Factorial (integers only)

(8) Power

(9) Your function

(0) Exit

Please choose an operation: 8

Enter the first number: 5

Enter the second number: 3

5^3 = 125

Calculator Menu:

(1) Addition

(2) Subtraction

(3) Multiplication

(4) Division

(5) Modulus (integers only)

(6) Test if prime (integers only)

(7) Factorial (integers only)

(8) Power

(9) Your function

(0) Exit Please choose an operation: 0

Good Bye!

Answer 1

input code:

output:

code:

#include <stdio.h>
#include <math.h>
void fun1() /*take value and do Addition*/
{
float a,b;
printf("Enter a first number:");
scanf("%f",&a);
printf("Enter a second number:");
scanf("%f",&b);
printf("%.2f + %.2f = %.2f\n",a,b,a+b);
}
void fun2() /*take value and do Subtraction*/
{
float a,b;
printf("Enter a first number:");
scanf("%f",&a);
printf("Enter a second number:");
scanf("%f",&b);
printf("%.2f - %.2f = %.2f\n",a,b,a-b);
}
void fun3() /*take value and do Multiplication*/
{
float a,b;
printf("Enter a first number:");
scanf("%f",&a);
printf("Enter a second number:");
scanf("%f",&b);
printf("%.2f * %.2f = %.2f\n",a,b,a*b);
}
  
void fun4() /*take value and do Division*/
{
float a,b;
printf("Enter a first number:");
scanf("%f",&a);
printf("Enter a second number:");
scanf("%f",&b);
/*check if divisor is zero or not*/
if(b!=0)
{
printf("%.2f / %.2f = %.2f\n",a,b,a/b);
}
else
{
printf("Divided by Zero.\n");
}
}
void fun5() /*find the Modulus*/
{
int c,d;
char ch='%';
printf("Enter a first number:");
scanf("%d",&c);
printf("Enter a second number:");
scanf("%d",&d);
printf("%d %c %d = %d\n",c,ch,d,c%d);
}
  
  
void fun6() /*check number is prime or not*/
{
int c,d,flag1=1,i;
printf("Enter a number:");
scanf("%d",&c);
/*take one for loop*/
for (i = 2; i <= sqrt(c); i++)
{
/*if number divisor than break loop*/
if (c % i == 0)
{
/*set flag*/
flag1 = 0;
break;
}
}
/*check flag*/
if (flag1 == 1)
{
printf("%d is a prime number\n", c);
}
else
{
printf("%d is not a prime number\n", c);
}
}
  
void fun7() /*find Factorial using for loop*/
{
int c,d,i,Factorial=1;
printf("Enter a number:");
scanf("%d",&c);
printf("%d!=",c);
for(i=1;i<=c;i++)
{
Factorial=Factorial*i;
if(i!=c)
{
printf("%d*",i);
}
else
{
printf("%d",i);
}
}
printf("=%d\n",Factorial);
}
void fun8() /*find Power using a power Function of math library*/
{
float a,b;
printf("Enter a first number:");
scanf("%f",&a);
printf("Enter a second number:");
scanf("%f",&b);
printf("%.2f ^ %.2f = %.2f\n",a,b,pow(a,b));
}
  
  
void fun9() /*find first n number of Fibonacci series*/
{
int c,i;
printf("Enter a number:");
scanf("%d",&c);
int array[c];
array[0]=0;
array[1]=1;
for(i=2;i<c;i++)
{
array[i]=array[i-1]+array[i-2];
}
printf("Fibonacci series is:");
for(i=0;i<c;i++)
{
printf("%d ",array[i]);
}
printf("\n");
}
  
int main()
{
int loop=1,n;
while(loop==1) /*take one loop so we can run untill user want*/
{
/*print menu*/
printf("Calculator Menu:\n");
printf("(1)Addition\n");
printf("(2)Subtraction\n");
printf("(3)Multiplication\n");
printf("(4)Division\n");
printf("(5)Modulus(intergers only)\n");
printf("(6)Test if prime(intergers only)\n");
printf("(7)Factorial(intergers only)\n");
printf("(8)Power\n");
printf("(9)Fibonacci\n");
printf("(0)Exit\n");
printf("Please choose an operation: ");
scanf("%d",&n);
if(n==0) /*check if n==0 than break loop*/
{
loop=0;
}
else
{
/*make switch case of every operation*/
switch(n)
{
case 1:
/*call fun1 which do Addition*/
fun1();
break;
case 2:
/*call fun2 which do Subtraction*/
fun2();
break;
case 3:
/*call fun3 which do Multiplication*/
fun3();
break;
case 4:
/*call fun4 which do Division*/
fun4();
break;
case 5:
/*call fun5 which do Modulus*/
fun5();
break;
case 6:
/*call fun6 which test prime or not*/
fun6();
break;
case 7:
/*call fun7 which find a Factorial*/
fun7();
break;
case 8:
/*call fun8 which find a power*/
fun8();
break;
case 9:
/*call fun9 which find a Fibonacci series*/
fun9();
break;
default:
printf("Invalid number\n");
}
}
}
printf("Good Bye!");
return 0;
}