Compilare: main.cpp: In function 'int calc(int, int, int)': main.cpp:10:4: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if (f[j]) ^ main.cpp:16:16: warning: no return statement in function returning non-void [-Wreturn-type] k=k-fact[n-i];}} ^ main.cpp: In function 'int main()': main.cpp:43:4: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if (f[j]) ^ main.cpp:18:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("inrudit.in","r",stdin); ^ main.cpp:19:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("inrudit.out","w",stdout); ^ main.cpp:21:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n",&k); ^ main.cpp:22:26: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(ch+1,1000003,stdin); ^