Compilare: user.c: In function ‘aranjeaza’: user.c:31:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,k; ^ user.c: In function ‘main’: user.c:75:5: warning: implicit declaration of function ‘close’ [-Wimplicit-function-declaration] close(fin); ^~~~~ user.c:57:5: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&T); ^~~~~~~~~~~~~~~~~~~ user.c:61:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%s",S); ^~~~~~~~~~~~~~~~~~ In file included from /usr/include/string.h:635:0, from user.c:3: In function ‘memset’, inlined from ‘main’ at user.c:72:9: /usr/include/bits/string3.h:90:10: warning: call to __builtin___memset_chk will always overflow destination buffer return __builtin___memset_chk (__dest, __ch, __len, __bos0 (__dest)); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~