Compilare: main.cpp: In function 'int main()': main.cpp:22:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("delfin.in", "r", stdin); ^ main.cpp:23:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("delfin.out", "w", stdout); ^ main.cpp:24:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d\n", &n, &m); ^ main.cpp:27:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] char c;scanf ("%c", &c); ^ main.cpp:48:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("\n"); ^ main.cpp:53:23: warning: 'tux' may be used uninitialized in this function [-Wmaybe-uninitialized] q[++dr] = {tux, tuy}; ^ main.cpp:53:23: warning: 'tuy' may be used uninitialized in this function [-Wmaybe-uninitialized] main.cpp:94:25: warning: 'finalx' may be used uninitialized in this function [-Wmaybe-uninitialized] dist3[finalx][finaly] = 0; ~~~~~~~~~~~~~~~~~~~~~~^~~ main.cpp:76:25: warning: 'percyy' may be used uninitialized in this function [-Wmaybe-uninitialized] dist2[percyx][percyy] = 0; ~~~~~~~~~~~~~~~~~~~~~~^~~ main.cpp:76:25: warning: 'percyx' may be used uninitialized in this function [-Wmaybe-uninitialized] main.cpp:94:25: warning: 'finaly' may be used uninitialized in this function [-Wmaybe-uninitialized] dist3[finalx][finaly] = 0; ~~~~~~~~~~~~~~~~~~~~~~^~~