Compilare: main.cpp: In function 'int main()': main.cpp:56:35: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d%d\n", &n, &m ) ; ^ main.cpp:59:39: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%c", &mat[i][j] ) ; ^ main.cpp:71:29: warning: 'julc' may be used uninitialized in this function [-Wmaybe-uninitialized] bfs(n, m, jull, julc, dj) ; ^ main.cpp:71:29: warning: 'jull' may be used uninitialized in this function [-Wmaybe-uninitialized] main.cpp:70:29: warning: 'romc' may be used uninitialized in this function [-Wmaybe-uninitialized] bfs(n, m, roml, romc, dr) ; ^ main.cpp:70:29: warning: 'roml' may be used uninitialized in this function [-Wmaybe-uninitialized]