I just want to be able to successfully call the validate Month function inside the getMonth function.. it works when i call getUserInput() but i get type cast errors if i try it with this function. Any idea as to how i can write it up? thnxs Code: unsigned getMonth() { /*** declare variables*/ unsigned i; int valid = 0; char *prompt = "Please enter a month between 0 - 12\n"; char *month; do { month = getUserInput(prompt); /* in here i want to call the validateMonth() fucntion*/ } while(!valid); /*printf("hello %s",month);*/ /*printf("Please enter a month between 0 - 12\n");*/ return EXIT_SUCCESS; } Code: unsigned validateMonth(unsigned month) { unsigned m; while(month<0 || month>12) { printf("Month error 0 or less or equal to 12 please\n"); } return m; }