qsort

 

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qsort

bsearch

 

Definido no cabeçalho <stdlib.h>
void qsort(constvoid*ptr, size_t count, size_t size,             int(*comp)(constvoid*, constvoid*));

Classifica a matriz dado apontado por ptr em ordem crescente. A matriz contém elementos count de size tamanho. Função apontada pelo comp é usado para comparação de objetos.

Original:

Sorts the given array pointed to by ptr in ascending order. The array contains count elements of size size. Function pointed to by comp is used for object comparison.

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Parâmetros

ptr	-	ponteiro para a matriz para classificar Original: pointer to the array to sort The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
count	-	número de elementos na matriz Original: number of element in the array The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
size	-	tamanho de cada elemento na matriz em bytes Original: size of each element in the array in bytes The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
comp	-	comparison function which returns ​a negative integer value if the first argument is less than the second, a positive integer value if the first argument is greater than the second and zero if the arguments are equal. The signature of the comparison function should be equivalent to the following:  int cmp(constvoid*a, constvoid*b); The function must not modify the objects passed to it. ​

Valor de retorno

(Nenhum)

Original:

(none)

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Exemplo

Os tipos de código a seguir um array de inteiros usando qsort()

Original:

The following code sorts an array of integers using qsort()

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#include <stdio.h>#include <stdlib.h>   int compare_ints(constvoid* a, constvoid* b){constint*arg1 = a;constint*arg2 = b;   return*arg1 -*arg2;}   int main(void){int i;int ints[]={-2, 99, 0, -743, 2, 3, 4};int size =sizeof ints /sizeof*ints;   qsort(ints, size, sizeof(int), compare_ints);   for(i =0; i < size; i++){printf("%d ", ints[i]);}   printf("\n");   returnEXIT_SUCCESS;}

Saída:

-743 -2 0 2 3 4 99

Veja também

bsearch	procura uma matriz para um elemento de tipo não especificado Original: searches an array for an element of unspecified type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
C++ documentation for qsort