📄 strstr.c
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#ifdef HAVE_CONFIG_H#include "config.h"#endif#include <string.h>char *strstr(const char *haystack, const char *needle){ const char *scan; size_t len; char firstc; firstc = *needle; len = strlen(needle); for (scan = haystack; *scan != firstc || strncmp(scan, needle, len); ) if (!*scan++) return NULL; return (char *)scan;}
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