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simple queue with array

Posted By: Huberta Miller     Category: C Programming     Views: 45892

Write a program of simple queue with array.

Code for simple queue with array in C Programming

#include<conio.h>
#include<stdio.h>
#define N 6

int queue[N]={0};
int rear=0,front=0;

void insert(void);
void del(void);
void disp(void);
void cre(void);

void main()
{
    int user=0;

    clrscr();
    while(user!=4)
    {
        clrscr();
        printf("\n\n\n\t\t\t THE SIZE OF QUEUE IS %d",N);
        printf("\n\t 1.INSERT");
        printf("\n\t 2.DELETE");
        printf("\n\t 3.DISPLAY");
        printf("\n\t 4.EXIT");
        printf("\n\t 5.CREATE");
        scanf("%d",&user);
        switch(user)
        {
            case 1:
                insert();
                break;
            case 2:
                del();
                break;
            case 3:
                disp();
                break;
            case 4:
                printf("\n\t THANK U");
                break;
            case 5:
                cre();
                break;
        }
        getch();

    }
    getch();
}



/*********************insert********************/
void insert(void) { int t; if(rear<N) { printf("\n\t ENTER A VALUE IN QUEUE"); scanf("%d",&t); queue[rear]=t; rear++; } else { printf("\n\t Q OVERFLOW!!!!!!!!!!!!!!!"); } } void del(void) { int i; printf("\n\t %d gets deleted.........",queue[front]); queue[front]=0; front++; } void disp(void) { int i; for(i=front;i<rear;i++) { printf("\n\t %d",queue[i]); } } void cre(void) { int t; printf("\n\t ENTER A VALUE IN QUEUE"); scanf("%d",&t); front=0; queue[front]=t; rear=front+1; }
  
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Huberta Miller
Huberta Miller author of simple queue with array is from Frankfurt, Germany.
 
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Deepak Sharma from India Comment on: Jul 17
How can we find the free space in Queue?
eg. I've inserted 10,20,30 in a Queue with size=5. Then Free space is 2. How can i get that? can you please tell me?

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