Compilare: user.cpp: In function ‘int scad(int*, int*)’: user.cpp:11:33: warning: no return statement in function returning non-void [-Wreturn-type] for(;a[0]>1 && !a[a[0]];a[0]--);} ^ user.cpp: In function ‘int add(int*, int*)’: user.cpp:18:10: warning: no return statement in function returning non-void [-Wreturn-type] a[0]=i-1;} ^ user.cpp: In function ‘int inmul(int*, int)’: user.cpp:25:10: warning: no return statement in function returning non-void [-Wreturn-type] a[0]=i-1;} ^ user.cpp: In function ‘int drop(int*)’: user.cpp:35:8: warning: no return statement in function returning non-void [-Wreturn-type] break;}} ^ user.cpp: In function ‘int copyc(int*, int*)’: user.cpp:40:11: warning: no return statement in function returning non-void [-Wreturn-type] a[0]=b[0];} ^ user.cpp: In function ‘int main()’: user.cpp:75:4: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (v[i].first) ^ user.cpp:42:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("indep.in","r",stdin); ^ user.cpp:43:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("indep.out","w",stdout); ^ user.cpp:45:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:53:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&x); ^