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std::strcmp

Da cppreference.com
< cpp‎ | string‎ | byte

 
 
Biblioteca cordas
Strings terminadas
Original:
Null-terminated strings
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Cadeias de bytes
Multibyte cordas
Cordas de largura
Classes
Original:
Classes
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basic_string
char_traits
 
Cordas de terminação nula de bytes
Funções
Original:
Functions
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Manipulação personagem
Original:
Character manipulation
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Conversões para formatos numéricos
Original:
Conversions to numeric formats
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Manipulação de cadeia
Original:
String manipulation
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strcpy
strncpy
strcat
strncat
strxfrm
Exame String
Original:
String examination
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Manipulação de memória
Original:
Memory manipulation
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memchr
memcmp
memset
memcpy
memmove
Diversos
Original:
Miscellaneous
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strerror
 
Defined in header <cstring>
int strcmp( const char *lhs, const char *rhs );
Compara duas seqüências de terminação nula de bytes. A comparação é feita lexicographically.
Original:
Compares two null-terminated byte strings. The comparison is done lexicographically.
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Ambos lhs e rhs deve apontar para strings válidas.
Original:
Both lhs and rhs should point to valid strings.
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Índice

[editar] Parâmetros

lhs, rhs -
ponteiros para as cordas de terminação nula de bytes para comparar
Original:
pointers to the null-terminated byte strings to compare
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[editar] Valor de retorno

Valor negativo se lhs é menos rhs.
Original:
Negative value if lhs is less than rhs.
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0 se lhs é igual rhs.
Original:
0 if lhs is equal to rhs.
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Valor positivo se lhs é maior rhs.
Original:
Positive value if lhs is greater than rhs.
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[editar] Exemplo

#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

[editar] Veja também

compara uma certa quantidade de caracteres de duas cordas
Original:
compares a certain amount of characters of two strings
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(função) [edit]
compara dois buffers
Original:
compares two buffers
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(função) [edit]
compara duas seqüências de acordo com a localidade
Original:
compares two strings in accordance to the current locale
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(função) [edit]
C documentation for strcmp