Compilare: main.cpp: In function 'int main()': main.cpp:29:22: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&n); ^ main.cpp:32:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&mat[i][j]); ^ main.cpp:58:37: warning: 'c' may be used uninitialized in this function [-Wmaybe-uninitialized] if(d[l][c]-1==d[l-dlin[dir]][c-dcol[dir]]){ ~^~~~~~~~~~ main.cpp:58:24: warning: 'l' may be used uninitialized in this function [-Wmaybe-uninitialized] if(d[l][c]-1==d[l-dlin[dir]][c-dcol[dir]]){ ~^~~~~~~~~~