Compilare: user.cpp: In function ‘int main()’: user.cpp:46:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&m,&n); ^ user.cpp:48:30: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(mat[i]+1,130,fin); ^ user.cpp:83:11: warning: ‘ariam’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(aria>ariam){ ^ user.cpp:42:25: warning: ‘lmax’ may be used uninitialized in this function [-Wmaybe-uninitialized] int m,n,i,j,nrcam=0,lmax,k,i2,j2,aria,ariam,im,jm; ^