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arrays_returnMissing.c
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arrays_returnMissing.c
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#include<stdio.h>
#include<stdlib.h>
struct Array{
int *A;
int size;
int length;
};
int Display(struct Array arr){
int i;
printf("\nElements are:\n");
for(i=0; i<arr.length; i++){
printf("%d\n",arr.A[i]);
}
}
void Insert(struct Array *arr ,int index ,int x ){
int i;
if(index>=0 && index<=arr->length){
for ( i = arr->length ; i >index; i--)
{
arr->A[i]=arr->A[i-1];
}
arr->A[index]=x;
}
arr->length++;
}
int Delete(struct Array *arr, int index){
int x=0;
int i;
if(index>=0 && index<arr->length){
x=arr->A[index];
for(i=index ; i<arr->length-1 ; i++){
arr->A[i]=arr->A[i+1];
}
arr->length--;
return x;
}
return 0;
}
int missing(struct Array * arr,int first){
int i, difference;
difference=first-0;
for(i=0;i<arr->length;i++){
if(arr->A[i]-i!=difference){
printf("Missing element is %d\n",i+difference );
break;
}
}
}
int main()
{
int choice,index,x,f;
struct Array arr;
printf("Enter size of the array:");
scanf("%d",&arr.size);
arr.A = (int*)malloc(arr.size*sizeof(int));
arr.length=0;
do{
printf("\nMenu\n");
printf("1 . Insert\n");
printf("2 . Delete\n");
printf("3 . Display\n");
printf("4 . Missing\n");
printf("5 . Exit\n");
printf("Enter your choice:",choice);
scanf("%d",&choice);
switch(choice){
case 1:printf("Enter index:",index);
scanf("%d",&index);
printf("Enter Element:",x);
scanf("%d",&x);
Insert(&arr,index,x);
break;
case 2:printf("Enter index:",index);
scanf("%d",&index);
x=Delete(&arr,index);
printf("Deleted element is %d",x);
break;
case 3:Display(arr);
break;
case 4:printf("Enter first element of the array:\n",f);
scanf("%d",&f);
missing(&arr,f);
break;
}
}while(choice<5);
return 0;
}