C language strcat,ctrcpy function prototype and improvement

The function prototypes are as follows:

Char*strcpy (Char*strdest,Const Char*strsrc) {    Char*address=strdest; Assert ((strdest!=null) && (strsrc!=NULL));  while(*strsrc!=' /') {        *strdest++=*strsrc++; }    *strdest=' /'; returnaddress;} Char*strcat (Char*strdest,Const Char*strsrc) {    Char*address=strdest; Assert ((strdest!=null) && (strsrc!=NULL));  while(*strdest!=' /') {strdest++; }     while(*strsrc!=' /') {        *strdest++ =* strsrc++; }    *strdest=' /'; returnaddress;}

//Enhanced string Copy and string concatenation functionsChar*strcpy_s (Char*strdest,intLenConst Char*strsrc) {    Char*address=strdest; inti =0; Assert ((strdest!=null) && (strsrc!=null) &&(size));  while(*strsrc!=' /') {        *strdest++=*strsrc++; I++; ASSERT (I<=Len); }    *strdest=' /'; returnaddress;} Char*strcat (Char*strdest,intLenConst Char*strsrc) {    Char*address=strdest; inti =0; Assert ((strdest!=null) && (strsrc!=NULL));  while(*strdest!=' /') {strdest++; I++; }     while(*strsrc!=' /') {        *strdest++ =* strsrc++; I++; ASSERT (I<=Len); }    *strdest=' /'; returnaddress;} 

C language strcat,ctrcpy function prototype and improvement