Mine

string1 = strlen(src1);  string2 = strlen(src2);  total = string1 + string2;  for (i = 0; i < (string1); i++){    dest[i] = src1[i];  }  dest[string1] = 'l';  for (i = (string1 + 1); i < total; i++){    dest[i] = src2[i];  }  dest[total] = '\0';}