Compilare: main.cpp: In function 'int main()': main.cpp:20:11: warning: unused variable 'st' [-Wunused-variable] int n,st,dr,mij,elemente; ^~ main.cpp:20:14: warning: unused variable 'dr' [-Wunused-variable] int n,st,dr,mij,elemente; ^~ main.cpp:20:17: warning: unused variable 'mij' [-Wunused-variable] int n,st,dr,mij,elemente; ^~~ main.cpp:20:21: warning: unused variable 'elemente' [-Wunused-variable] int n,st,dr,mij,elemente; ^~~~~~~~ main.cpp:24:33: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %lld",&n,&ef); ^