Compilare: user.cpp: In function ‘int main()’: user.cpp:12:23: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[2000001]’ [-Wformat=] scanf("%s%s",&p,&s); ^ user.cpp:12:23: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[2000001]’ [-Wformat=] user.cpp:9:11: warning: unused variable ‘n’ [-Wunused-variable] int i,n,k,x,nr,B,nr1,nr2,p1,p2,k1,k2,nnr1,nnr2,j; ^ user.cpp:9:15: warning: unused variable ‘x’ [-Wunused-variable] int i,n,k,x,nr,B,nr1,nr2,p1,p2,k1,k2,nnr1,nnr2,j; ^ user.cpp:9:17: warning: unused variable ‘nr’ [-Wunused-variable] int i,n,k,x,nr,B,nr1,nr2,p1,p2,k1,k2,nnr1,nnr2,j; ^ user.cpp:9:20: warning: unused variable ‘B’ [-Wunused-variable] int i,n,k,x,nr,B,nr1,nr2,p1,p2,k1,k2,nnr1,nnr2,j; ^ user.cpp:10:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("strmatch.in","r",stdin); ^ user.cpp:11:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("strmatch.out","w",stdout); ^ user.cpp:12:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s%s",&p,&s); ^