Compilare: user.cpp: In function ‘int main()’: user.cpp:23:13: warning: unused variable ‘k’ [-Wunused-variable] int i,j,k,pmin1,pmin2; ^ user.cpp:24:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&n,&m); ^ user.cpp:27:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&v[i][j]); ^