Chèn vào dãy

#include<stdio.h>
#include<conio.h>

int i,n,k,x,a[100];

int main()
{
    printf("\nNhap gia tri cua n = ");scanf("%d",&n); //nhap so phan tu day
    for(i=0;i<n;i++){
    printf("a[%d] = \t",i);scanf("%d",&a[i]);}  //nhap day a[n]
    printf("Nhap gia tri x = ");scanf("%d",&x); // nhap gia tri can chen
    // tim vi tri cua x
        for(i=0;i<=n-1;i++)
            if(x>=a[i])
            k=i+1;
    //chen x vao day
        for(i=n-1;i>=k;i--)
            a[i+1]=a[i];
            a[k]=x;n++;
        printf("\nMa tran sau khi chen la:");
        for(i=0;i<=n-1;i++) printf("\n%d ",a[i]);
    getch();
}