Home

How to retain two decimal places in c++

In C++, use the `std::fixed` and `std::setprecision` functions (defined in the `<iomanip>` header file) to preserve two decimal places in the output. `std::fixed` sets the output format to a fixed decimal point format, while `std::setprecision(2)` specifies keeping two decimal places. If you want to know more about C++, you can read the articles below this topic.

257

c++ string system time numerical value date time c

Table of Contents

How to retain two decimal places in c++

How to retain two decimal places in c++ output

In C++, two decimal places can be preserved on output using the `std::fixed` and `std::setprecision` functions (defined in the `<iomanip>` header file). `std::fixed` sets the output format to a fixed decimal point format, while `std::setprecision(2)` specifies keeping two decimal places.

Mar 25, 2024 pm 04:07 PM

c++

How to initialize a two-dimensional array in C++

The method of initializing a two-dimensional array in C++: first define two integer variables and initialize different values for the two-dimensional array; then use a double loop to output each value in the array; finally use the numbers enclosed in curly brackets to assign values directly .

Jan 06, 2021 pm 01:56 PM

How to change dev c++ to Chinese

How to change dev c++ to Chinese: First open the software, click Tools on the menu bar, and select Envirnoment Options in the menu; then click the drop-down box in the blue position of the anguage that pops up, select Simplified Chinese, and press Enter to confirm.

Mar 26, 2021 pm 01:38 PM

How to set global variables in c++

C++ global variables refer to variables that are not enclosed in curly braces outside the function. The method of setting global variables: first define a custom function that implements addition; then define a custom function that implements multiplication; then in the main function Just implement the operation of the program.

Feb 10, 2020 am 09:03 AM

c++

How to compare two strings in c++?

The method of comparing two strings in C++: first define the integer variable j and two string variables; then input the two strings and save them in the variables s1 and s2 and compare the sizes; finally, according to the value of the judgment result j, output two String comparison results are enough.

Jun 22, 2020 pm 02:16 PM

c++ string

How to get system time in c++?

Methods for obtaining system time in c++: 1. Use system functions, and you can modify the system time; 2. Get the system time, the code is [time_t now_time=time(NULL)]; 3. Use the windows API, accurate to the millisecond level.

Jul 07, 2020 pm 02:16 PM

c++ system time

How to get the extreme value of a numerical value in C++

This article mainly introduces how to obtain numerical extreme values in C++. The editor thinks it is quite good, so I will share it with you now and give it as a reference. Let’s follow the editor and take a look.

Apr 04, 2018 pm 04:13 PM

c++ numerical value

How to implement the string splitting function split in C++? (code example)

When learning the basic usage of strings in C++, I discovered that sstream's istringstream[1] can input strings in a console-like manner. In fact, this behavior is equivalent to using spaces to split a string, so Considering that this feature can be used to implement the string splitting function split that is not available in the c++ library function

Nov 25, 2019 pm 04:50 PM

c++ string

How to return array from function in c++

C++ does not allow returning a complete array as a parameter of a function, but you can return a pointer to an array by specifying an array name without an index, such as "int * myFunction(){...}".

Feb 10, 2020 am 08:56 AM

c++

How to simply output the current date and time in C++

First introduce 2 data types. One is time_t, a variable related to the time function. The defined variable records the number of seconds that have passed since January 1, 1970, also called a timestamp. The other is the structure tm...

Jul 01, 2020 pm 03:33 PM

c++ date time

How to read excel in c++

How to read excel in c++: first add the code "#include <afxdb.h> #include <odbcinst.h>" to the "StdAfx.h" file; then create the excel file through ODBC; then read the Excel file directly through ODBC That’s it.

Feb 19, 2020 am 09:30 AM