NAME regcomp, regexec, regerror, regfree - POSIX regex functions LIBRARY Standard C library ( libc , -lc ) SYNOPSIS ... const char *restrict regex , int cflags ); int regexec(const…NAME regcomp, regexec, regerror, regfree - POSIX regex functions LIBRARY Standard C library ( libc , -lc ) SYNOPSIS ... const char *restrict regex , int cflags ); int regexec(const…NAME regcomp, regexec, regerror, regfree - POSIX regex functions LIBRARY Standard C library ( libc , -lc ) SYNOPSIS ... const char *restrict regex , int cflags ); int regexec(const…NAME regcomp, regexec, regerror, regfree - POSIX regex functions LIBRARY Standard C library ( libc , -lc ) SYNOPSIS ... const char *restrict regex , int cflags ); int regexec(const…NAME regcomp, regexec, regerror, regfree - POSIX regex functions LIBRARY Standard C library ( libc , -lc ) SYNOPSIS ... const char *restrict regex , int cflags ); int regexec(const…reasons that regcomp (3) or regexec (3) can fail; the cause of the errorrepeated occurrences of a BRE permitted by regexec (3) and regcomp (3). Must