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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #define SIZE 5
  4.  
  5. int Queue[SIZE];
  6. int TOP = -1, PTR = -1;
  7.  
  8. void push(int data){
  9.     if(TOP == -1 && PTR == -1){
  10.         TOP = TOP + 1;
  11.         PTR = PTR + 1;
  12.         Queue[PTR] = data;
  13.     }else{
  14.         PTR = PTR + 1;
  15.         Queue[PTR] = data;
  16.     }
  17. }
  18.  
  19. void peek(){
  20.     printf("The element is : %d \n", Queue[TOP]);
  21. }
  22.  
  23. void printQueue(){
  24.     if(TOP == -1 && PTR == -1){
  25.         printf("The Queue is empty");
  26.     }else{
  27.         for(int i=0; i<=PTR; i++){
  28.             printf("%d ", Queue[i]);
  29.         }
  30.         printf("\n");
  31.     }
  32. }
  33.  
  34. void deleteQueue(){
  35.     if(TOP==-1 && PTR==-1){
  36.         printf("The Queue is empty");
  37.     }else{
  38.         PTR = PTR - 1;
  39.     }
  40. }
  41.  
  42. int main(){
  43.     push(12);
  44.     push(67);
  45.     printQueue();
  46.     push(23);
  47.     printQueue();
  48.     peek();
  49.     deleteQueue();
  50.     printQueue();
  51.  
  52.     return 0;
  53. }
Success #stdin #stdout 0.01s 5296KB
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stdin
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Standard input is empty
stdout
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12 67 
12 67 23 
The element is : 12 
12 67
https://ideone.com/zuzWXg
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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