Compilare: main.cpp: In function 'int main()': main.cpp:61:35: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'bool*' [-Wformat=] fscanf(fin, "%d", &mat[i][j]); ^ main.cpp:57:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &m); ^ main.cpp:61:36: 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: In function 'int skyline(int, int*)': main.cpp:33:10: warning: 'max1' may be used uninitialized in this function [-Wmaybe-uninitialized] return max1; ^~~~