Create a calculator in C, again in C and again in C. This is a textual calculato

Question

Create a calculator in C, again in C and again in C. This is a textual calculator not a GUI. a. Your calculator should begin by displaying the functions your calculator is able to perform. b. The user should then be able to insert a formula for which you calculate and display the answer. c. The following functions need to be handled by your calculator: i. Sin ii. Cos iii. Tan iv. X^2 v. X^Y vi. Square root vii. Addition viii. Subtraction ix. Multiplication x. Division xi. Parentheses d. The user should be able to enter a formula like: 2 * (3 + 4) – 21 / 7 Your calculator should honor the order of operations and give the correct answer of 11. thank you

Explanation / Answer

#include <stdio.h>
#include <math.h>
void postfix(char str[]);
float evaluate(char str[]);
int main()
{
    int option,x,y;
    char str[20];
    printf("enter option 1. sine 2.cosine 3.Tan
              4.square your number find x power y
              5.squareroot of your number 6.Addition
              7. subtraction 8. multiplication 9. divison
              10. calculate given infix epression 0. stop    ");
    scanf("%d",&option);
    while(1)
    {
    switch(option)
    {
        case 1:
         printf("enter x which is an integer");
         scanf("%d", &x);
         printf("sin(%d)=%lf",x,sin(x));
         break;
        case 2:
        printf("enter x which is an integer");
        scanf("%d", &x);
         printf("cos(%d)=%lf",x,cos(x));
         break;
         case 3:
         printf("enter x which is an integer");
        scanf("%d",&x);
         printf("tan(%d)=%lf",x,tan(x));
          break;
           case 4:
           printf("enter x");
        scanf("%d", &x);
         printf("square(%d)=%lf",x, x*x);
          break;
          case 5:
           printf("enter x and y values");
        scanf("%d %d", &x,&y);
         printf("power(%d,%d)=%d",x, pow(x,y));
          break;
          case 6:
          printf("enter x and y values");
        scanf("%d %d", &x,&y);
         printf("sum (%d,%d)=%d",x,y, x+x);
          break;
           case 7:
          printf("enter x and y values");
        scanf("%d %d", &x,&y);
         printf("difference (%d,%d)=%d",x,y, x-x);
          break;
           case 8:
          printf("enter x and y values");
        scanf("%d %d", &x,&y);
         printf("product (%d,%d)=%d",x,y, x*x);
          break;
          case 9:
          printf("enter x and y values");
        scanf("%d %d", &x,&y);
         printf("divison (%d,%d)=%d",x,y, x/y);
          break;
          case 10:
          printf("enter an infix expression");
          scanf("%s"str);
        postfix(str);
      
          break;
        
   default:printf("invalid option");
   exit(0);
    }
   return 0;
}

void postfix(char str[])
{
    char token;
while((token=getchar())!='')
{
    if(isalnum(token))
       str1[i++]=token;
    else
       if(token == '(')
           push(&s,'(');
       else
       {
         if(token == ')')
             while((x=pop(&s))!='(')
             str1[i++]=x;
             else
         {
         while(priority(token)< =priority(top(&s)) && !empty(&s))
             {
             x=pop(&s);
             str1[i++]=x;
             }
         push(&s,token);
         }
       }
}
while(!empty(&s))
    {
    x=pop(&s);
    str1[i++]=x;
    }
printf("%f",evaluate(str1));
}

float evaluate(char str[])
{
    char[] x;
    int i=0;
    while(str[i]!='')
    {
    x=getchar();
       if(isalnum(x))
       {
    a=atoi(x);
    push(&s,a);
    i++;
       }
    else
    {a=pop(&s);
    b=pop(&s);

    push(&s,operate(a,b,x));
    }
    return(pop(&s));
  
}
/* function to check prority of operators*/
int priority(char x)
{
   if(x == '(')
return(0);
   if(x == '+' || x == '-')
return(1);
   if(x == '*' || x == '/' || x == '%')
return(2);
   return(3);
}
/* function to initialize stack*/
void init(stack *s)
{
   s->top=-1;
}
/* function to check whether stack is empty or not*/
int empty(stack *s)
{
    if(s->top==-1)
return(1);
    else
return(0);
}
/*function to check whether stack is full or not*/
int full(stack *s)
{
    if(s->top==MAX-1)
return(1);
    else
return(0);
}
/* function to push a character onto stack*/
void push(stack *s,char x)
{
s->top=s->top+1;
s->data[s->top]=x;
}
//The function to pop character from top of stack*/
char pop(stack *s)
{
   int x;
   x=s->data[s->top];
   s->top=s->top-1;
   return(x);
}
/*this function returns char top of stack*/
char top(stack * s)
{
   return(s->data[s->top]);
}

please contact me for furthur queries.

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.