int

[Solved] How do I select the first, second, or third digit from a String containing three digits? [closed]

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[ad_1] You could try this. String nbr = input.nextLine(); int a=nbr.charAt(0)-‘0’; int b=nbr.charAt(1)-‘0’; int c=nbr.charAt(2)-‘0’; Also, you could use substring and parse the result Using Integer.parseInt int a=Integer.parseInt(nbr.substring(0,1)); //Contains the leftmost digit 2 [ad_2] solved How do I select the first, second, or third digit from a String containing three digits? [closed]

[Solved] Named int vs named float

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[ad_1] The comment in the link says “integer, pointer and member pointer template parameters aren’t lvalues” (emphasis mine). It does not say that named integer variables are not lvalues – they are. If there were such a thing as floating-point template parameters, then they wouldn’t be lvalues either; but named floating-point variables still would be. … Read more

[Solved] Expected primarly expression before ]? (C++)

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[ad_1] The error message tells you that an expression is expected at a certain point in your code: calcNumbers(myArr[missing expression here ], type); Why is that? Because operator[] takes an argument (traditionally an index), as in myArr[1]. No argument, no compile. Note that this error occurs when you are using myArr. You have other places … Read more

[Solved] Java > Generate a lot of int

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[ad_1] In Java 8 streams, you can generate a stream of integers between two numbers using: IntStream.range(lower, upper)… If you want them to be randomised, then you can use: Random random = new Random(); random.ints(count, lower, upper)… You can then use methods such as forEach, reduce or collect to do something with the stream. So, … Read more

[Solved] How do I read a line of 12 numbers from a file and store it into an array?

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[ad_1] This should fix your problem. It will parse all rows and place each line in a string stream. It then parses the string stream and streams the elements into doubles. It should work for any combination of rows and column elements. #include <iostream> #include <fstream> #include <string> #include <sstream> #include <vector> using namespace std; … Read more