Eroare de compilare: user.cpp: In function ‘bool NOT()’: user.cpp:29:74: error: lvalue required as left operand of assignment else if(c[pointer] == 'T' && c[pointer + 1] == 'R' && c[pointer + 2] = 'U') ^ user.cpp: In function ‘int main()’: user.cpp:78:23: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(c,nmax+3,in); ^ user.cpp:82:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d\n",&t); ^ user.cpp:83:23: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(k,tmax+3,in); ^