Question

C语言题目：从键盘输入n，打印n行倒等腰三角形，如n=4，则打印：（如图） ******* ***** *** *

Answer 1

#include<iostream>
using namespace std;
int main()
{
int num;
cout << "从键盘输入一个数:";
cin >> num;
for (int k=1; k<=num; k++)
{
for (int i=k; i<=num; i++ )
{
cout << " ";
}

for (int j=0; j<2*k-1; j++)
{
cout << "*";
}
cout << endl;
}
}

Answer 2

for(n=8;n>0;n-=2)
{for(j=1;j<n;j++)
print("*");
print("\n");
}

Answer 3

/* Note:Your choice is C IDE */
#include "stdio.h"
void main()
{int i,j,k,n;
scanf("%d",&n);
for(i=0;i<=n;i++)
{
for(j=0;j<=i;j++)
printf(" ");
for(k=1;k<=2*(n-i)-1;k++)
printf("*");
printf("\n");
}

}