#include?<stdio.h>
int?main()
{
????int?i,?j,?k;
????for(i=1;?i<5;?i++)
????{
????????/*?觀察每行的空格數(shù)量，補(bǔ)全循環(huán)條件?*/
????????for(??j=i?;?j<5?;??j++?)??
????????{
????????????printf("?");????//輸出空格
????????}
????????/*?觀察每行*號(hào)的數(shù)量，補(bǔ)全循環(huán)條件?*/
????????for(?k=?0?;k<?2*i-1??;??k++?????)?
????????{
????????????printf("*");???//每行輸出的*號(hào)
????????}
????????printf("\n");?????//每次循環(huán)換行
????}
????return?0;
}