String concatenation without strcat in C

Question

I am having trouble concatenating strings in C, without strcat library function. Here is my code

#include
#include
#include<         


        

Answer 1

You can do it using strcpy() too ;)

char *a = (char *) malloc(100);
char *b = (char *) malloc(100);

strcpy(a, "abc");               // initializes a
strcpy(b, "def");               // and b

strcpy((a + strlen(a)), b);     // copy b at end of a

printf("%s\n",a);               // will produce: "abcdef"