Compilare: user.cpp: In function ‘int main()’: user.cpp:8:34: warning: unused variable ‘num’ [-Wunused-variable] int n,i,j,max=-1,s=0,t=0,k=0,num=0; ^ user.cpp:11:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(intrare,"%d",&n); ^ user.cpp:16:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(intrare,"%d",&a[i][j]); ^