concating two string in C

strcat takes two char * arguments and returns the concatenated string as a char *. Here's a simple use of strcat:

#include 
#include 

int main() {
 char str1[50] = "Hello ";
 char str2[] = "World";

 strcat(str1, str2);

 printf("str1: %s\n", str1);

 return 0;
}

Output:

str1: Hello World