How to use matlab loop statement for

#How to use matlab loop statement for?

How to use for statement and application examples in matlab

for loop statement

1. The general format is:

for x (loop variable ) = array (array)

commands (executed loop code)

end

2. array can be a number or an array, for example, input:

for a=5
for a=1:5
for a=1:1:5（以1为步长到5）

Only when a=1:5 and a=1:1:5, the results between them will be displayed. When a=5, only the final result will be displayed. The change of a is that a=1 in the first cycle, a=2 in the second cycle, a=3 in the third cycle, a=4 in the fourth cycle, and a=5 in the fifth cycle.

3. (commands) is a command, and there can be many command lines. The most common one is to call the a change mentioned above. For example:

for a=10 %循环10次
s=a+1 %循环语句
end %结束

The a above does not need to be specified, a The change is that as mentioned above, it is first 1, then 2, 3,... Then s is first s=1 1=2, then s=2 1=3, s=3 1=4,..., s=10 1= 11. The end of the loop is an instruction to continuously add s, and finally =11.

4. The for statement can be nested, just like C

for a=5 %第一个for循环
for b=5 %第二个for循环
s=a+b
end %第二个for结束
end %第一个for结束

Because the last loop a=5, b=5, so 5 5=10.

Example 1,

for a= (1:10)’
s=a+1
end

The function of ' is inversion, so a becomes a 10:1 column vector, a=array, s=array.

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