Borderou de evaluare (job #289943)

Eroare de compilare: user.cpp: In function 'int main()': user.cpp:50:5: error: 'st' was not declared in this scope user.cpp:55:26: error: 'v' was not declared in this scope user.cpp:71:12: error: 'r1' was not declared in this scope user.cpp:71:24: error: 'r2' was not declared in this scope user.cpp:35:23: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:40:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]