if...else...end 语句语法:
MATLAB 中一个 if ... else 语句的语法示例:
if <expression> % statement(s) will execute if the boolean expression is true <statement(s)> else <statement(s)> % statement(s) will execute if the boolean expression is false end
如果布尔表达式的值为 “true”,那么执行 if 的代码块;如果布尔表达式的值为 “false”,else 的代码块将被执行。
if...else...end 语句流程图:
详细例子如下:
在MATLAB中建立一个脚本文件,并输入下述的代码:
a = 100; % check the boolean condition if a < 20 % if condition is true then print the following fprintf('a is less than 20 ' ); else % if condition is false then print the following fprintf('a is not less than 20 ' ); end fprintf('value of a is : %d ', a);
编译和执行上述代码,产生下述结果:
a is not less than 20 value of a is : 100
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