Compilare: user.cpp: In function ‘int main()’: user.cpp:14:23: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[100003]’ [-Wformat=] fscanf(fi,"%s",&s); ^ user.cpp:23:24: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘int’ [-Wformat=] fprintf(fo,"%s",k+1); ^ user.cpp:13:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d\n",&v); ^ user.cpp:14:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%s",&s); ^