一道棘手的vfp编程题，请大虾帮忙啊

clear
for i=1 to 5
for j=1 to i
?? "@"
endfor
?
endfor

程序如下，希望对你有帮助：
set talk off
clear
? '欢迎使用本程序，打印左对齐星号'
input '请输入想打印的行数： ' to m
for a = 1 to m
for b = 1 to a
@ a + 5,b say '@'
endfor
endfor
set talk on
return