Compilare: user.cpp: In function ‘int main()’: user.cpp:16:13: warning: unused variable ‘cifre’ [-Wunused-variable] int cifre = 0; ^ user.cpp:9:30: 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:12:41: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d" ,&mat[i][j]); ^