#define _GNU_SOURCE // for asprintf(), if needed #include  // for printf() (and asprintf(), if needed) #include  // for malloc() and free() #include  // for strlen() and strcat(), if needed #include  // just in case char *catStrings(char *strs[], int nStrs) { // Modify the body of this function as requested. Do not modify // any other part of this file. } int main(int argc, char *argv[]) { char *result = catStrings(argv+1, argc-1); printf("%s ", result); free(result); return 0; } 

Using the above code in C, how would I:

1. Find out how many bytes need to be malloc()'d. (Don't forget to allow for the spaces and the null terminator.)
2. malloc() the result.
3. Copy each member of strs to the result, followed by a space, except for the last member. (Equivalently, preceed each member by a space, except for the first one.)
4. Return the result.