bubble sort or exchange sort or comparison sort in c language

bubble sort or exchange sort or comparison sort in c language :

bubble sort program  in c language :

#include<stdio.h>
#include<string.h>
int main()

{
int a[50],temp=0,i,j,n;
printf("how many number u want to sort=");
scanf("%d",&n);

printf("enter array of number\n");
for(i=0;i<n;i++)
{
scanf("%d",&a[i]);
}

for(i=1;i<n;i++)
{
for(j=0;j<n-i;j++)
{
if(a[j]>=a[j+1])
{
temp=a[j];
a[j]=a[j+1];
a[j+1]=temp;
}
}
}

for(i=0;i<n;i++)
{
printf("%d\n",a[i]);
}
return 0;

}