MATLAB if…else…end 语句
如果语句可以后跟一个可选的否则语句,在表达式为假时执行。
语法
MATLAB 中 if…else…end 语句的语法是 −
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
如果布尔表达式计算结果为true,那么if代码块将被执行,否则将执行else代码块。
流程图
示例
创建一个脚本文件并输入以下代码-
a = 100;
% check the boolean condition
if a < 20
% if condition is true then print the following
fprintf('a is less than 20\n' );
else
% if condition is false then print the following
fprintf('a is not less than 20\n' );
end
fprintf('value of a is : %d\n', a);
当上述代码编译并执行时,会产生以下结果:
a is not less than 20
value of a is : 100