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std::strcmp

De cppreference.com
< cpp‎ | string‎ | byte

 
 
Bibliothèque de chaînes de caractères
Chaînes à zéro terminal
Original:
Null-terminated strings
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Les chaînes d'octets
Chaines multi-octets
Les chaînes étendues
Classes
Original:
Classes
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basic_string
char_traits
 
Chaînes d'octets à zéro terminal
Fonctions
Original:
Functions
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Manipulation caractère
Original:
Character manipulation
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Conversion aux formats numériques
Original:
Conversions to numeric formats
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La manipulation de chaînes
Original:
String manipulation
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strcpy
strncpy
strcat
strncat
strxfrm
Examen chaîne
Original:
String examination
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Manipulation de la mémoire
Original:
Memory manipulation
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memchr
memcmp
memset
memcpy
memmove
Divers
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Miscellaneous
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strerror
 
Defined in header <cstring>
int strcmp( const char *lhs, const char *rhs );
Compare deux chaînes d'octets à zéro terminal. La comparaison est faite lexicographique .
Original:
Compares two null-terminated byte strings. The comparison is done lexicographically.
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Les deux lhs et rhs doit pointer vers des chaînes valides .
Original:
Both lhs and rhs should point to valid strings.
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Sommaire

[modifier] Paramètres

lhs, rhs -
pointeurs vers les chaînes d'octets à zéro terminal à comparer
Original:
pointers to the null-terminated byte strings to compare
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[modifier] Retourne la valeur

Valeur négative si lhs est moins rhs .
Original:
Negative value if lhs is less than rhs.
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0 si lhs est égal à' rhs .
Original:
0 if lhs is equal to rhs.
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Valeur positive si lhs est supérieure à' rhs .
Original:
Positive value if lhs is greater than rhs.
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[modifier] Exemple

#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';
    }
}

Résultat :

Garfield
Heathcliff
Hobbes
Snagglepuss

[modifier] Voir aussi

compare un certain nombre de caractères de deux chaînes
Original:
compares a certain amount of characters of two strings
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(fonction) [edit]
compare deux tampons
Original:
compares two buffers
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(fonction) [edit]
compare deux chaînes en fonction de la localisation en cours
Original:
compares two strings in accordance to the current locale
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(fonction) [edit]
C documentation for strcmp