Created
October 21, 2021 22:19
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Implementation of the strdup function in C
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| /** | |
| * @file strdup.c | |
| * @author CGuichard | |
| * @standard C99 | |
| * @version 1.0 | |
| * @date 22th October 2021 | |
| * | |
| * @brief Implementation of the strdup function in C | |
| * | |
| * This file implements the function strdup in C. As the name implies, | |
| * it duplicates strings. | |
| * | |
| * First, it allocates a new pointer of the size of the old string plus one, | |
| * because we need to end our new string with '\0'. After that, | |
| * we simply copy the data from the old pointer to the new one with memcpy. | |
| * | |
| * Don't forget to free the new string! | |
| */ | |
| #include <string.h> | |
| #include <stdlib.h> | |
| char* strdup(const char* srcString) { | |
| size_t len = strlen(srcString) + 1; | |
| char* newString = (char *) malloc(len * sizeof(char)); | |
| if (newString == NULL) { | |
| return NULL; | |
| } | |
| return (char *) memcpy(newString, srcString, len); | |
| } |
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