Compilare: user.c: In function ‘sitrling_main’: user.c:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:13: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:31: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result user.c:35: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result user.c: In function ‘union_find_main’: user.c:95: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:96: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:100: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result user.c:107: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result user.c: In function ‘evaluare_main’: user.c:172: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:173: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:175: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result user.c: In function ‘print’: user.c:203: warning: format ‘%d’ expects type ‘int’, but argument 2 has type ‘long int’ user.c: In function ‘scmax_main’: user.c:207: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:208: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:215: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result user.c:219: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result user.c: In function ‘strmatch_main’: user.c:322: warning: unused variable ‘ok’ user.c:322: warning: unused variable ‘j’ user.c:299: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:300: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:302: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result user.c:303: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result user.c: In function ‘kmp_main’: user.c:411: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:417: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result user.c:418: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result user.c: In function ‘pinex_main’: user.c:583: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:584: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:588: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result user.c:593: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result user.c: In function ‘nim_main’: user.c:600: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:601: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:604: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result user.c:606: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result user.c:609: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result user.c: In function ‘cmap_main’: user.c:666: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:667: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:670: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result user.c:675: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result user.c: In function ‘arbint_main’: user.c:777: warning: unused variable ‘it’