附加说明
f范例
i
cludestdiohmai
chara”Thisisstri
gA”charbuf80spri
tfbuf”s
”apri
tf“s”bufThisisstri
gA
执行
常用该函数代替itoa，将整数格式化为字符串形式。如：i
tpage0charpage_ch56pagepage10spri
tfpage_ch