strstr
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| Definido no cabeçalho <string.h>
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| const char *strstr( const char* str, const char* substr ); |
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| char strstr( char* str, const char* substr ); |
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Encontra a primeira ocorrência do
substr cadeia de bytes na cadeia de bytes apontado por str. Original:
Finds the first occurrence of the byte string
substr in the byte string pointed to by str. The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
Índice |
[editar] Parâmetros
| str | - | ponteiro para o byte string terminada em nulo para examinar
Original: pointer to the null-terminated byte string to examine The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
| substr | - | ponteiro para o byte string terminada em nulo para pesquisar
Original: pointer to the null-terminated byte string to search for The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
[editar] Valor de retorno
Ponteiro para o primeiro caractere da substring encontrada em
str, ou se não NULL substring for encontrado. Se substr aponta para uma cadeia vazia, str é devolvido.Original:
Pointer to the first character of the found substring in
str, or NULL if no such substring is found. If substr points to an empty string, str is returned.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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[editar] Exemplo
#include <string.h> #include <stdio.h> void find_str(char const* str, char const* substr) { char* pos = strstr(str, substr); if(pos) { printf("found the string '%s' in '%s' at position: %d\n", substr, str, pos - str); } else { printf("the string '%s' was not found in '%s'\n", substr, str); } } int main(int argc, char* argv[]) { char* str = "one two three"; find_str(str, "two"); find_str(str, ""); find_str(str, "nine"); find_str(str, "n"); return 0; }
Saída:
found the string 'two' in 'one two three' at position: 4 found the string '' in 'one two three' at position: 0 the string 'nine' was not found in 'one two three' found the string 'n' in 'one two three' at position: 1
[editar] Veja também
| encontra a primeira ocorrência de um caractere Original: finds the first occurrence of a character The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função) | |
| localiza a última ocorrência de um caractere Original: finds the last occurrence of a character 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 strstr
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