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These are some basic functions that you will come across while learning C++.

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\"c++\"

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Sorting

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Use the std::sort() function to sort arrays and vectors in ascending order.\nSort will include the beginning pointer but not the ending pointer.

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#include <algorithm>\n\nsort(begin, end, wayToSort (optional))
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For arrays

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int size = 5;\nint myArray[size] = {45, 2, 76, 62, 15};\nsort(myArray, myArray+size);
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or using C++ 11,

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sort(begin(myArray), end(myArray));
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For vectors

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#include <vector>\n#include <algorithm>\n\nvector<int> myVector = {98, 26, 72, 12, 35, 65};\nsort(myVector.begin(), myVector.end());
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To sort in alphabetical order

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#include <vector>\n#include <string>\n#include <algorithm>\n\nvector<string> myVector = {98, 26, 72, 12, 35, 65};\nsort(myVector.begin(), myVector.end());
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Using a comparing function

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Define your own function to use in sorting. To sort the above array in descending order:

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bool wayToSort(int i, int j) { return i > j; }\nsort(myVector.begin(), myVector.end(), wayToSort);
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Substring of a string

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substr(position, length)
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If length is not given, the string up to the end is taken.

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string myString = \"This is a sentence\";\nmyString.substr(5, 2);                   //\"is\"\nmyString.substr(10);                     //\"sentence\"
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Happy coding in C++!

","frontmatter":{"date":"September 17, 2017","path":"/basic-cplusplus-functions","title":"Basic C++ Functions","tags":["C++"]}}},"pageContext":{}},"staticQueryHashes":["3649515864"]}