Compilare: user.cpp: In function ‘int main()’: user.cpp:17:33: 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:21:39: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d", &mat[i][j] ) ; ^ user.cpp:30:41: warning: ‘p’ may be used uninitialized in this function [-Wmaybe-uninitialized] if (minim > mat[x][j]+mat[x+1][j] && j != y ){ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~