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); ^~~~~~~~~~~~~~~~~~