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To perform case insensitive contains in C#, use the String.IndexOf method. The String.IndexOf () finds the first occurrence of a particular string inside another string. The comparison type is determined by the StringComparison parameter, which we pass as the second parameter. case insensitive string Is there a way to use the standard libraries to do this? Compare My code is GPL licensed, can I issue a license to have my code be distributed in a specific MIT licensed project? Solved programs: Optimum way to compare strings in JavaScript. V1 and V2 could be assigned any numbers as well. It is a well-defined problem for Feedback The behavior is NOT undefined (it is well-defined) if either string is a null ptr. How to include a JavaScript file in another JavaScript file ? (x == y) or ! To compare two C strings ( char * ), use strcmp (). The function returns 0 when the strings are equal, so you would need to use this in your code: you are comparing the pointers (addresses) of both strings, which are unequal when you have two different pointers (which is always the case in your situation). Difference Between malloc() and calloc() with Examples, Dynamic Memory Allocation in C using malloc(), calloc(), free() and realloc(). compare strings The scope of collations also extends beyond case-sensitivity, to other aspects of character data; in German, for example, it is sometimes (but not always) desirable to treat and ae as identical. The actual list of available collations and their naming schemes is database-specific; consult the section below for links to relevant documentation pages of various databases. This can be accomplished by explicitly specifying a collation within the query itself: This generates a COLLATE clause in the SQL query, which applies a case-sensitive collation regardless of the collation defined at the column or database level: Indexes are one of the most important factors in database performance - a query that runs efficiently with an index can grind to a halt without that index. Compare String Case Insensitive Sqlite, PostgreSQL), others are case-insensitive (SQL Server, MySQL). Compare Two Strings Provides a way to request the compiler to generate consistent comparison operators for a class. SEO About us LinkedIn C program to compare two string using case and ignoring case Different C++ compilers have different function names such as strncasecmp _strnicmp strnicmp and strncmpi. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. This page has been accessed 225,326 times. I've found built-in such method named from which contains additional string functions to the standard header . This will generate an equality comparison of each base class and member subobject, in their declaration order. In this program we will see how to check whether two strings are Such operator will be deleted if overload resolution over x <=> y (considering also operator<=> with reversed order of parameters) fails, or if this operator@ is not applicable to the result of that x <=> y.