Program16.c

#include<stdio.h>
#define MAX 100
int stack[MAX],top=-1;
void push(int data)
{
    if(top==MAX-1)
        printf("\nStack Overflow.");
    else
        stack[++top]=data;    
}
int pop()
{
    int del;
    if(top==-1)
    {
        printf("\nStack empty.");
        return -1;
    }
    else
    {
        del=stack[top--];
        return del;
    }
}
int peek()
{
    if(top==-1)
        return -1;
    else
        return stack[top];    
}
void display()
{
    if(top==-1)
        printf("\nStack Empty");
    else
    {
        printf("\n");
        for(int i=0;i<=top;i++)
        {
            printf("%d\n",stack[i]);
        }
    }    
}
void convertToBinary(int num)
{
    while(num)
    {
        push(num%2);
        num/=2;
    }
}
void displayBinary()
{
    printf("\nBinary : ");
    while(top!=-1)
    {
        printf("%d",pop());
    }
    printf("\n");
}
void convertToHex(int num)
{
    while(num)
    {
        push(num%16);
        num/=16;
    }
}
void displayHex()
{
    printf("\nHex : ");
    while(top!=-1)
    {
        int disp=pop();
        switch(disp)
        {
            case 10:
                printf("A");
                break;

            case 11:
                printf("B");
                break;

            case 12:
                printf("C");
                break;

            case 13:
                printf("D");
                break;

            case 14:
                printf("E");
                break;

            case 15:
                printf("F");
                break;

            default:
                printf("%d",disp);
                break;            
        }
    }
    printf("\n\n");
}
int main()
{
    int num;
    printf("Enter a number : ");
    scanf("%d",&num);
    convertToBinary(num);
    displayBinary();
    convertToHex(num);
    displayHex();
    return 0;
}