ld -o program question9_mastermind_main.o question9_mastermind_functions.o ld: warning: cannot find entry symbol _start; defaulting to 00000000080480b4 question9_mastermind_main.o: In function `main': /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_main.c:87: undefined reference to `printf' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_main.c:88: undefined reference to `printf' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_main.c:117: undefined reference to `puts' question9_mastermind_functions.o: In function `intro_to_user': /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:30: undefined reference to `putchar' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:31: undefined reference to `puts' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:33: undefined reference to `printf' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:34: undefined reference to `printf' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:35: undefined reference to `puts' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:36: undefined reference to `printf' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:37: undefined reference to `puts' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:38: undefined reference to `puts' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:39: undefined reference to `puts' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:42: undefined reference to `printf' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:44: undefined reference to `puts' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:47: undefined reference to `printf' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:49: undefined reference to `puts' question9_mastermind_functions.o: In function `get_random_numbers': /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:62: undefined reference to `time' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:62: undefined reference to `srand' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:76: undefined reference to `rand' question9_mastermind_functions.o: In function `get_user_guess': /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:110: undefined reference to `scanf' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:122: undefined reference to `getchar' question9_mastermind_functions.o: In function `good_guess': /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:159: undefined reference to `puts' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:160: undefined reference to `printf' question9_mastermind_functions.o: In function `calculate_results': /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:225: undefined reference to `printf' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:240: undefined reference to `putchar' question9_mastermind_functions.o: In function `winner': /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:267: undefined reference to `printf' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:268: undefined reference to `printf' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:269: undefined reference to `scanf' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:275: undefined reference to `puts' question9_mastermind_functions.o: In function `store_data': /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:296: undefined reference to `printf' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:297: undefined reference to `scanf' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:298: undefined reference to `printf' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:299: undefined reference to `scanf' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:308: undefined reference to `fopen' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:310: undefined reference to `printf' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:311: undefined reference to `exit' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:313: undefined reference to `printf' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:314: undefined reference to `fprintf' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:315: undefined reference to `fclose' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:320: undefined reference to `puts' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:321: undefined reference to `puts' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:322: undefined reference to `puts' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:323: undefined reference to `fopen' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:330: undefined reference to `printf' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:328: undefined reference to `fscanf' /home/jstile/2007_spring/Intro_to_C_Programming/Final/question9_mastermind_functions.c:333: undefined reference to `fclose' make: *** [program] Error 1