Compilare: user.cpp: In function ‘int paranteze()’: user.cpp:137:13: warning: unused variable ‘r’ [-Wunused-variable] int r = expresie(); ^ user.cpp: In function ‘int main()’: user.cpp:36:20: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(s,1010,f); ^ user.cpp:90:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d\n",&t); ^ user.cpp:93:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%c", &ch); ^