Compilare: user.cpp: In function ‘int main()’: user.cpp:14:25: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[5001]’ [-Wformat=] fscanf(fi,"%s" ,&str); ^ user.cpp:30:39: warning: suggest parentheses around ‘+’ in operand of ‘&’ [-Wparentheses] val1=((val1-pow1*str[i-len])&(MOD1-1)+MOD1)*B1+str[i]; ^ user.cpp:14:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%s" ,&str); ^