std::strstr
From cppreference.com
Defined in header <cstring>
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const char* strstr( const char* haystack, const char* needle ); |
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char* strstr( char* haystack, const char* needle ); |
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Finds the first occurrence of the byte string needle
in the byte string pointed to by haystack
. The terminating null characters are not compared.
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[edit] Parameters
haystack | - | pointer to the null-terminated byte string to examine |
needle | - | pointer to the null-terminated byte string to search for |
[edit] Return value
Pointer to the first character of the found substring in haystack
, or a null pointer if no such character is found. If needle
points to an empty string, haystack
is returned.
[edit] Example
Run this code
#include <iostream> #include <cstring> int main() { const char *str = "Try not. Do, or do not. There is no try."; const char *target = "not"; const char *result = str; while ((result = std::strstr(result, target))) { std::cout << "Found '" << target << "' starting at '" << result << "'\n"; // Increment result, otherwise we'll find target at the same location ++result; } }
Output:
Found 'not' starting at 'not. Do, or do not. There is no try.' Found 'not' starting at 'not. There is no try.'
[edit] See also
finds the first occurrence of the given substring (public member function of std::basic_string<CharT,Traits,Allocator> )
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finds the first occurrence of a wide string within another wide string (function) | |
finds the first occurrence of a character (function) | |
finds the last occurrence of a character (function) | |
C documentation for strstr
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