#include<stdio.h>main(){int n,i,j; printf("enter n:"); scanf("%d",&n); for(i=1;i<=n;i++){ for(j=1;j<=10;j++)putchar(" "); for(j=1;j<=n-i;j++)putchar(" "); for(j=1;j<=2i-1;j++)putchar("*"); putchar("\n"); } for(i=1;i<=n-1;i++){ for(j=1;j<=10;j++)putchar(" "); for(j=1;j<=i;j++)putchar(" "); for(j=1;j<=2n-3;j++)putchar("*"); putchar("\n"); }}輸入4運行結果應該是 * *** ***** ******* ***** *** * *** ***** *** *****