SIMPLE QUEUE PROGRAM IN C | DS practical gtu

 /**WRITE A PROGRAM TO IMPLEMENT QUEUE USING ARRAYS THAT PERFOMS FOLLOWING OPERATIONS: ENQUEUE , DEQUEUE , DISPLAY**/

(SIMPLE QUEUE PROGRAM IN C | DS practical gtu)

• HERE IS A CODE OF SIMPLE QUEUE USING IF ELSE IN C PROGRAM:- (SIMPLE QUEUE PROGRAM IN C | DS practical gtu)

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INPUT:

//code written by www.techsayright.blogspot.com// #include<stdio.h> #include<conio.h> #define max 5 int q[max],front=-1,rear=-1; void display() { if(front==-1 || front>rear) { printf("\n queue is underflow"); } else { printf("\n the element of queue:"); for(int i=front;i<=rear;i++) { printf("\n %d",q[i]); } printf("\n"); } } void enqu() { int x; printf("\nenter the value:"); scanf("%d",&x); if(rear>=max-1) { printf("\nqueue is overflow"); } else { if(rear==-1 || front==-1) { printf("inserted element is %d\n",x); front=rear=0; q[rear]=x; } else { printf("inserted element is %d\n",x); rear++; q[rear]=x; } } display(); } void dequ() { if(front==-1 || front>rear) { printf("\nqueue is underflow"); return ; } else { printf("deleted element from queue is:%d\n",q[front]); front=front+1; } display(); } void main() { int choice; clrscr(); do { printf("\n select from \n1-enqueue \n2-dequeue \n3-display \n4-exit \nenter the choice:"); scanf("%d",&choice); switch(choice) { case 1: enqu(); break; case 2: dequ(); break; case 3: display(); break; case 4: break; default: printf("\nenter the valid choice"); } }while(choice!=4); getch(); }

OUTPUT:

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