Compilare: main.cpp: In function 'int main()': main.cpp:9:13: warning: unused variable 'nr' [-Wunused-variable] int n,i,nr=0,j,k,a,b,ok,s,ii; ^~ main.cpp:9:22: warning: unused variable 'a' [-Wunused-variable] int n,i,nr=0,j,k,a,b,ok,s,ii; ^ main.cpp:9:24: warning: unused variable 'b' [-Wunused-variable] int n,i,nr=0,j,k,a,b,ok,s,ii; ^ main.cpp:10:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("turnuri4.in","r",stdin); ^ main.cpp:11:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("turnuri4.out","w",stdout); ^ main.cpp:12:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:14:38: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[i]),v2[i]=v[i]; ^