std::strcmp
Defined in header <cstring>
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int strcmp( const char *lhs, const char *rhs ); |
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Compares two null-terminated byte strings lexicographically.
The sign of the result is the sign of the difference between the values of the first pair of characters (both interpreted as unsigned char) that differ in the strings being compared.
The behavior is undefined if lhs
or rhs
are not pointers to null-terminated strings.
Parameters
lhs, rhs | - | pointers to the null-terminated byte strings to compare |
Return value
Negative value if lhs
appears before rhs
in lexicographical order.
Zero if lhs
and rhs
compare equal.
Positive value if lhs
appears after rhs
in lexicographical order.
Example
Run this code
#include <vector> #include <cstring> #include <algorithm> #include <iostream> int main() { std::vector<const char*> cats {"Heathcliff", "Snagglepuss", "Hobbes", "Garfield"}; std::sort(cats.begin(), cats.end(), [](const char *strA, const char *strB) { return std::strcmp(strA, strB) < 0; }); for (const char *cat : cats) { std::cout << cat << '\n'; } }
Output:
Garfield Heathcliff Hobbes Snagglepuss
See also
compares a certain number of characters from two strings (function) | |
compares two wide strings (function) | |
compares two buffers (function) | |
compares two strings in accordance to the current locale (function) |