Compilare: main.cpp: In function 'int main()': main.cpp:78:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("marbles.in", "r", stdin); ^ main.cpp:79:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("marbles.out", "w", stdout); ^ main.cpp:81:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ main.cpp:85:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x, &c); ^ main.cpp:92:38: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &tip, &x, &y); ^ main.cpp: In function 'int cautst(int, int)': main.cpp:57:12: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized] return ans; ^~~ main.cpp: In function 'int cautdr(int, int)': main.cpp:73:12: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized] return ans; ^~~ main.cpp: In function 'int main()': main.cpp:102:38: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized] Max = max(Max, posdr - posst + 1); ~~~~~~^~~~~~~ main.cpp:102:38: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized] main.cpp:97:28: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized] if(v[j][pos] == x) ^