Eroare de compilare: user.cpp:9:1: error: expected ‘,’ or ‘;’ before ‘char’ char expr[NMAX]; ^~~~ user.cpp: In function ‘int main()’: user.cpp:18:31: error: ‘expr’ was not declared in this scope scanf("%d\n%s\n",&cerinta,expr); ^~~~ user.cpp:23:10: warning: unused variable ‘ok’ [-Wunused-variable] bool ok = false; ^~ user.cpp:16:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("eq4.in","r",stdin); ^ user.cpp:17:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("eq4.out","w",stdout); ^ user.cpp:19:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d\n",&a,&b,&E); ^