Stack LAB HW (int & char)

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

typedef struct data
{
    int a;
    char c;
    struct data *next;

} data;

data *head=NULL;

void push(int x,char y)
{
    data *n=(data*)malloc(sizeof(data));
    n->a=x;
    n->c=y;
    n->next=NULL;
    if(head==NULL)
    {
        head=n;

        return;
    }
    n->next=head;
    head=n;

    return;

}
int pop()
{
    if(head==NULL)
    {

        return  printf("   Nothing to");
    }
    data *del=head;

    int m=head->a;

    return printf("   Popped :%d ",m);

}
char popc()
{
    if(head==NULL)
    {
        return  printf(" POP\n");
    }
    data *del=head;

    char p=del->c;

    head=head->next;

    free(del);

    return printf("%c \n",p);

}

int top()
{
    if(head==NULL)
    {
        return printf("    Top is Empty \n");
    }

    return printf("    Top: %d %c \n",head->a, head->c);
}

void reset()
{

    head=NULL;
    printf("    Reseted\n");
    return;
}

int print()
{
    data *temp=head;
    if(head==NULL)
    {
        printf("   Empty");
    }
    while(temp!=NULL)
    {
        printf("   %d %c",temp->a, temp->c);
        temp=temp->next;
    }
    printf("\n");
}

int main()
{

    int n,aa;
    char cc;

    while(1)
    {
         //printf("\n%d %d %d \n",head->a, head->next->a,head->next->next->a);
        printf("\n1.PUSH\n");
        printf("2.POP\n");
        printf("3.TOP\n");

        printf("4.PRINT\n");
        printf("9.RESET\n");
        printf("0.BREAK\n");

        printf("   Command: ");
        scanf("%d",&n);
        printf("\n");


        if(n==1)
        {
            printf("Integer & Character: ");
            scanf("%d %c",&aa,&cc);


            push(aa,cc);
        }

        if(n==2)
        {
            pop();
            popc();
        }
        if(n==3)
        {
            top();
        }
        if(n==4)
        {
            print();
        }
        if(n==9)
        {
            reset();
        }
        if(n==0)
        {
            printf("    Prgrm Clossed\n");
            break;
        }

    }

}