Compilare: user.cpp: In function ‘int main()’: user.cpp:16:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,ok,sum,a,b,kk,c; ^ user.cpp:16:13: warning: unused variable ‘ok’ [-Wunused-variable] int i,j,ok,sum,a,b,kk,c; ^ user.cpp:16:16: warning: unused variable ‘sum’ [-Wunused-variable] int i,j,ok,sum,a,b,kk,c; ^ user.cpp:20:10: warning: unused variable ‘nou’ [-Wunused-variable] lis *nou,*aux; ^ user.cpp:17:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d%d",&n,&m,&kk); ^ user.cpp:19:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&k[i]); ^ user.cpp:23:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d%d",&a,&b,&c); ^