You can’t compare strings in C with == , because the C compiler does not really have a clue about strings beyond a string-literal. Show activity on this post. In C because, in most contexts, an array “decays into a pointer to its first element”.
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strcmp() in C/C++ This function is used to compare the string arguments. It compares strings lexicographically which means it compares both the strings character by character. It starts comparing the very first character of strings until the characters of both strings are equal or NULL character is found.
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C++ String compare()
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You should not use == (equality operator) to compare these strings because they compare the reference of the string, i.e. whether they are the same object or not. On the other hand, equals() method compares whether the value of the strings is equal, and not the object itself.
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Two strings are said to be equal if they have same value at character level. Using C++, we can check if two strings are equal. To check if two strings are equal, you can use Equal To == comparison operator, or compare() function of string class .
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String is a collection of characters. There are two types of strings commonly used in C++ programming language: Strings that are objects of string class (The Standard C++ Library string class) C-strings (C-style Strings)
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C++ String Example
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