How can we convert a string to an integer in MATLAB?

In MATLAB, you can use the str2num function to convert a string to an integer. For example:

str = '123';
num = str2num(str);
disp(num);

This way, the string ‘123’ can be converted to the integer 123. It should be noted that the str2num function will automatically ignore any non-numeric characters in the string, so if the string contains non-numeric characters, it may not be correctly converted to an integer.