View Code of Problem 53

#include<stdio.h>
int main(){
	int n;
	int i,j,k;
	scanf("%d",&n);
	for(i=0;i<n;i++){
		for(k=1;k<n-i;k++){
			printf(" ");
		}
		for(j=0;j<2*i+1;j++){
			printf("*");
		}
		printf("\n");
	}
	for(i=n;i>1;i--){
		for(k=0;k<n-i+1;k++){
			printf(" ");
		}
		for(j=0;j<2*i-3;j++){
			printf("*");
		}
		printf("\n");
	}
}