View Code of Problem 57

#include<stdio.h>

int main(){
	int n,i,j,k,m;
	scanf("%d",&n);
	//上半三角形 
	for(i=1;i<=n;i++){
		for(j=n-i;j>0;j--)
		printf(" ");
		m=1;
		while(m<i){//输出1~i-1 
		printf("%d",m);
		m++;
		}
		while(m>=1){//输出i~1 
			printf("%d",m);
			m--;
		}
		printf("\n");
	}
	
	//下半三角形 
	for(i=n-1;i>0;i--){
		for(j=n-i;j>0;j--)
		printf(" ");
		m=1;
		while(m<i){
		printf("%d",m);
		m++;
		}
		while(m>=1){
			printf("%d",m);
			m--;
		}
		printf("\n");
	} 
}