Compilare: user.cpp: In function ‘int main()’: user.cpp:18:21: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[5002]’ [-Wformat=] fscanf(f,"%s",&a); ^ user.cpp:19:21: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[5002]’ [-Wformat=] fscanf(f,"%s",&b); ^ user.cpp:48:34: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] sol[cop1]=NULL; ^ user.cpp:97:35: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] sol1[cop2]=NULL; ^ user.cpp:13:42: warning: unused variable ‘ver’ [-Wunused-variable] int n,i,ok1=0,ss=-1,ss1=-1,j,k,ok2=0,ver,cop1,cop2; ^ user.cpp:17:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d ",&n); ^ user.cpp:18:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%s",&a); ^ user.cpp:19:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%s",&b); ^