Borderou de evaluare (job #499488)

Eroare de compilare: user.cpp: In function 'int main()': user.cpp:34:8: error: 'ch' was not declared in this scope user.cpp:40:15: error: 'ch' was not declared in this scope user.cpp:45:36: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'int' [-Wformat] user.cpp:47:5: error: 'k' was not declared in this scope user.cpp:26:12: warning: unused variable 'j' [-Wunused-variable] user.cpp:31:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:43:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:45:37: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]