C Programs Searching Element in Array

This program is for searching a element with a array. This is a part of Mumbai University MCA Colleges C Programs MCA Sem 1
#include<conio.h>
#include<stdio.h>
#define size 100
void main()
{
int ar[size],i,n,key,found=0;
clrscr();
li:
printf("\nEnter the size of array");
scanf("%d",&n);
if((n<1)||(n>=size))
{
printf("\nArray size is invalid");
goto li;
}
printf("\nEnter the elements in array");
for(i=0;i<n;i++)
{
scanf("%d",&ar[i]);
}
printf("\nEnter the key number to search");
scanf("%d",&key);
for(i=0;i<n;i++)
{
if(ar[i]==key)
{
printf("\nThe key %d is found at position %d in the Array",key,i);
found=1;
}
}
if(found==0)
{
printf("The key %d is not found is the array",key);
}
getch();
}

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