ref: 9765e95b59e0b020c32609b69cf573c597857abf
dir: /doc/man3/strcat.3/
.TH strcat 3 .SH NAME strcat - concatenate two strings .SH SYNOPSIS #include <string.h> char *strcat(char *restrict s1, const char *restrict s2) .SH DESCRIPTION The .BR strcat () function appends a copy of the string pointed to by .I s2 (including the terminating null character) to the end of the string pointed to by .IR s1 . .PP The initial character of .I s2 overwrites the null character at the end of .I s1 .PP If copying takes place between objects that overlap, the behaviour is undefined. .SH RETURN VALUE The .BR strcat () function shall return the pointer .IR s1 . .SH STANDARDS ISO/IEC 9899:1999 Section 7.21.3.1