Compilare: user.cpp: In function ‘int nratoi(char*)’: user.cpp:12:18: warning: NULL used in arithmetic [-Wpointer-arith] while (x[i]!=NULL) ^ user.cpp: In function ‘void rez2(int, char*)’: user.cpp:23:8: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (nr!=0) ^ user.cpp: In function ‘void rez5(int, char*)’: user.cpp:107:8: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (nratoi(y)) ^ user.cpp: In function ‘void rez22(int, char*)’: user.cpp:123:8: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (nr!=0) ^ user.cpp: In function ‘void rez6(int, char*)’: user.cpp:179:8: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (nratoi(y)) ^ user.cpp: In function ‘void rez7(int, char*)’: user.cpp:192:8: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (lin[0]!=0) ^ user.cpp: In function ‘void rez8(int, char*)’: user.cpp:216:8: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (nratoi(y)) ^ user.cpp: In function ‘void rez9(int, char*)’: user.cpp:241:12: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (nratoi(y)) ^