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What is a string? How do you declare and initialize a string? How can you use a string? Manipulating Strings in C. String Examples. String Practice. Introduction. Sequence of zero or more characters, terminated by NUL (literally, the integer value 0) Every string is terminated by NUL and NUL is not part of the string.
C provides a wide range of string functions for performing different string tasks. Examples. strlen(str) - calculate string length strcpy(dst,src) - copy string at src to dst strcmp(str1,str2) - compare str1 to str2. Functions come from the utility library string.h. #include <string.h>.
String functions in C with examples. What are strings? In simple language STRING'S are nothing but the character array. The declaration of string (character array) is much similar to normal array declaration. Each string is terminated by '\0' as indication of string termination.
C strings are simply a sequence of chars, followed by a terminating 0 (called a "null" byte). C strings are referenced by a pointer to its first character, or by an array variable,
Support for Strings in C Most string manipulation is done through functions in <string.h> String functions depend upon final '\0' So you don’t have to count the characters! Examples:– int strlen(char *s) – returns length of string Excluding final '\0' char* strcpy(char *s, char *ct) – Copies string ct to string s, return s s
int strcpy(char *s1, const char *s2); // Returns the number of characters in s before a '\0' is // encountered. int strlen(const char *s); These functions come in handy with dealing with strings. It's important to follow the specification for each function when calling them.
Since C strings are contiguous regions of memory, many of the operations on C strings can be written in lighting-fast assembly code that can outperform even the most tightly-written C or C++ loops.
