View Code of Problem 53

#include <stdio.h>
#include <stdlib.h>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */

int main(int argc, char *argv[]) {
	/*Description:从键盘输入一个整数n(1≤n≤9),打印出指定的数字图形*/
	int num;
	int i,j;
	//printf("Please input the number: ");
	scanf("%d",&num);
	//printf("The figure is:\n");
	for(i=1; i<=num; i++){
		for(j=1;j<=num-i;j++){
			printf(" ");
		}
		for(j=1;j<=i;j++){
			printf("*");
		}
		for(j=i-1;j>0;j--){
			printf("*");
		}
		
		printf("\n");
	}
	for(i=num-1;i>0;i--){
		for(j=1;j<=num-i;j++){
			printf(" ");
		}
		for(j=1;j<=i;j++){
			printf("*");
		}
		for(j=i-1;j>0;j--){
			printf("*");
		}

		if(i!=1) 
			printf("\n");
	}
	return 0;
}