Compilare: user.cpp: In function ‘int main()’: user.cpp:21:11: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(s[i]!='\n') ^ user.cpp:39:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(s[i]!='\n') ^ user.cpp:12:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(si,"%lli",&c[i]); ^ user.cpp:14:24: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(s,1000005,si); ^ user.cpp:15:24: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(s,1000005,si); ^ user.cpp:17:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(si,"%lli",&w); ^