Compilare: user.cpp: In function ‘void calc_match(char*, int)’: user.cpp:15:26: warning: suggest parentheses around assignment used as truth value [-Wparentheses] while(p = strstr(p, S)) { ^ user.cpp:13:9: warning: unused variable ‘index’ [-Wunused-variable] int index = 0; ^~~~~ user.cpp: In function ‘void citire()’: user.cpp:25:13: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] f >> str+1; ~~~^~