Find a Value in Array and Remove It

#include <stdio.h>
#include <conio.h>
int nhapmang(int a[100], int n)
{
    int i;
    for(i=0;i<n;i++)
    {
                    printf("Element %d: ",i);
                    scanf("%d",&a[i]);
    }
}
int inmang(int a[100], int n)
{
    int i;
    printf("Array: ");
    for(i=0;i<n;i++)
    {
                    printf("%4d",a[i]);
    }
}
int demsophantu(int x, int a[100], int n)
{
    int d=0, i;
    for(i=0;i<n;i++)
    {
                    if(a[i]==x)
                    {
                               d++;
                    }
    }
    return d;
}
int main()
{
    int a[100],d,x,n,i,j;
    A:
    printf("\n\nNumber of array elements: ");
    scanf("%d",&n);
    nhapmang(a,n);
    inmang(a,n);
    printf("\nEnter a value wants count and delete: ");
    scanf("%d",&x);
    d=demsophantu(x,a,n);
    printf("%d have %d in array.\n",x,d);
    for(i=0;i<n;i++)
    {
                    if(a[i]==x)
                    {
                               for(j=i;j<n;j++)
                               {
                                               a[j]=a[j+1];
                               }
                               i=i-1;
                    }
    }
    printf("Array after deleteing %d: ",x);
    for(i=0;i<n-d;i++)
    {
                    printf("%4d",a[i]);
    }
    getch();
    goto A;
}