Compilare: user.cpp: In function ‘void aCauta(int, int, int, int)’: user.cpp:41:15: warning: variable ‘ok’ set but not used [-Wunused-but-set-variable] int k,ok=0; ^ user.cpp: In function ‘int desc(int)’: user.cpp:63:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:70:22: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(s,100010,f); ^ user.cpp:72:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&m); ^ user.cpp:75:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&A[i].a); ^