Compilare: user.cpp: In function ‘int rez(char*)’: user.cpp:74:16: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] sir[tot+1]=NULL; ^ user.cpp:16:16: warning: unused variable ‘j’ [-Wunused-variable] int lg,i,j,pozb,dif,tot,ss=0,mi=999999999,ma=-1; ^ user.cpp: In function ‘int main()’: user.cpp:88:26: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[50002]’ [-Wformat=] fscanf(f,"%s",&c); ^ user.cpp: In function ‘int rez(char*)’: user.cpp:78:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:85:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^ user.cpp:88:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%s",&c); ^