C language: bubble sorting

#include <stdio.h>
int main()
{
    
	int a[10] , i , j;
	printf(" Please enter 10 Number ：");
	for(i = 0 ; i < 10 ; i++){
    
		scanf("%d",&a[i]);
	}
	printf("\n=========== Before ordering ============\n"); 
	for(i = 0 ; i < 10 ; i++){
    
		printf("%5d",a[i]);
	}
	for(i = 0 ; i < 9 ; i++){
    
		for(j = 0 ; j < 9 - 1 - i ; j++){
    
			if(a[j] > a[j+1]){
    
				int t = a[j];
				a[j] = a[j+1];
				a[j+1] = t;
			}
		}
	}
	printf("\n=========== After ordering ============\n");
	for(i = 0 ; i < 10 ; i++){
    
		printf("%5d",a[i]);
	}
	return 0;
}