Compilare: user.cpp: In function ‘int main()’: user.cpp:17:25: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[20]’ [-Wformat=] fscanf(f,"%s",&s); ^ user.cpp:60:52: warning: too many arguments for format [-Wformat-extra-args] fprintf(g,"pop(1) write(&d)",st1[1]); ^ user.cpp:9:20: warning: unused variable ‘q’ [-Wunused-variable] char s[20],*p,*q; ^ user.cpp:10:51: warning: unused variable ‘t1’ [-Wunused-variable] int i,n=0,st1[30000],st2[30000],j,s1=0,s2=0,t,t1=1,ok,ok1=1,n1; ^ user.cpp:10:59: warning: variable ‘ok1’ set but not used [-Wunused-but-set-variable] int i,n=0,st1[30000],st2[30000],j,s1=0,s2=0,t,t1=1,ok,ok1=1,n1; ^