Question

program should be in c language. thank you for helping me.

1 of 4 CSCI 281 LAB 5 -STACKS AND A CALCULATOR ASSIGNMENT Using 2 stacks to implement a calculator CALCULATOR 1. User input of two types. Integer values and associated tokens(+ 2. As the user needs to enter the input in the following manner: +5/17-3 9+2 8+7 You should use a looping scanf to allow the user to enter digit, then a char, then a digit, then a car ete until they press the enter key 3. 4. Each integer (evens) will be added to the integer stack. 5. Each token (odds) will be added to the character stack (Hint: counter82-0 if even, counter82 1 if odd.) 2 17 6. After the stacks are full or the user is done entering numbers and tokens, complete the following: a. You will read the first number off the stack, then the first char, then the second number You will need to use a switch statement to determine which token you have, and then complete the operation. In the example above, you have a +, so you will set a double variable called calculation equal to 7+8 b.

Answer 1

#include <stdio.h>
#include <stdlib.h>

#define MAXSIZEI 8
#define MAXSIZEC 7

int *p;
char *c;
int *topInt; /* points to top of stack of int */
int *topChar; /* points to top of stack of char */
int *bottomInt;
char *bottomChar;

void pushInt(int i)
{
if(p > bottomInt) {
printf("Stack Full\n");
return;
}
*p = i;
p++;
  
}
void pushChar(char i)
{
if(c > bottomChar) {
printf("Stack Full\n");
return;
}
*c = i;
c++;
}

int popInt(void)
{
p--;
if(p < topInt) {
printf("Stack Underflow\n");
return 0;
}
return *p;
}
char popChar(void)
{
c--;
if(c < topChar) {
printf("Stack Underflow\n");
return 0;
}
return *c;
}

int main(void)
{
int a, b;
char s[80];
char value;
int digit1;
int digit2;
char token;
double calculation = 0.0;
  
p = (int *) malloc(MAXSIZEI*sizeof(int)); /* get stack memory */
if(!p) {
printf("Allocation Failure\n");
exit(1);
}
topInt = p;
bottomInt = p + MAXSIZEI-1;

c = (char *) malloc(MAXSIZEC*sizeof(char)); /* get stack memory */
if(!c) {
printf("Allocation Failure\n");
exit(1);
}
topChar = c;
bottomChar = c + MAXSIZEC-1;

int i = 1;

while(i=10){

printf("********************************************\n");
printf("Select one of the following \n");
printf("1 Continue \n");
printf("0 Exit \n");
printf("********************************************\n");
scanf("%d", &digit1);
if(digit1 == 0)
exit(0);
  
printf("Please enter your calculation\n");
  

do {
//printf("Enter digit1\n");
scanf("%d", &digit1);
pushInt(digit1);
//printf("Enter token\n");
scanf("%c", &token);
//scanf("%c", &token);
pushChar(token);
//printf("Enter digit2\n");
scanf("%d", &digit2);
pushInt(digit2);
  
scanf("%c", &value);
} while(value != '\n');
calculation = 0.0;
while(p>topInt){
a = popInt();
token = popChar();
b = popInt();


switch(token) {
case '+':
calculation = calculation +(a+b);
break;
case '-':
calculation = calculation +(b-a);
break;
case '*':
calculation = calculation +(b*a);
break;
case '/':
  
if(a==0) {
printf("Divide by 0.\n");
break;
}
calculation = calculation +(b/a);
break;
}
}
printf("********************************************\n");
printf("Calculation final total %f\n", calculation);
printf("********************************************\n");
  
}
return 0;
}