matlab输入输出语句（input、disp、fprintf）

输入数值

?x=input(\'please input a number:\')

please input a number:22

x = 22

输入字符串

?x=input(\'please input a string:\',\'s\')

please input a string:this is a string

x = this is a string

自由格式 (disp)

?disp(23+454-29*4)

361

?disp([11 22 33; 44 55 66; 77 88 99])

11 22 33

44 55 66

77 88 99

?disp(\'this is a string\')

this is a string

格式化输出 (fprintf)

fprintf(\'The area is %8.5f\n\', area) % 注意输出格式前须有%符号，

%跳行符号须有\符号The area is 12.56637

%8.5f 输出值为8位数含5位小数

错误消息显示命令

?error(\'this is an error\')

??? this is an error