Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:24:19: error: ISO C++ forbids comparison between pointer and integer [-fpermissive] if(v==1){ ^ user.cpp:9:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &n); ^ user.cpp:11:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d", &a, &b); ^