clear
input "请输入N:" to n
s=0
for i=1 to n
k=""
for j=1 to i
k=k+alltrim(str(i))
endfor
h=int(val(k))
s=s+h
endfor
"S=1+22+333+…+nnn...n=",s
clear
input "请输入N:" to n
s=0
for i=1 to n
k=""
for j=1 to i
k=k+alltrim(str(i))
endfor
h=int(val(k))
s=s+h
endfor
"S=1+22+333+…+nnn...n=",s