Compilare: user.cpp: In function ‘unsigned int nratoi(char*)’: user.cpp:15:18: warning: NULL used in arithmetic [-Wpointer-arith] while (x[i]!=NULL) ^ user.cpp: In function ‘void rez2(unsigned int, char*)’: user.cpp:26:8: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (nr!=0) ^ user.cpp: In function ‘void rez22(unsigned int, char*)’: user.cpp:109:8: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (nr!=0) ^ user.cpp: In function ‘void rez5(unsigned int, char*)’: user.cpp:137:8: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (nratoi(y)) ^ user.cpp: In function ‘void rez6(unsigned int, char*)’: user.cpp:182:8: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (nratoi(y)) ^ user.cpp: In function ‘void rez7(unsigned int, char*)’: user.cpp:195:8: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (lin[0]!=0) ^ user.cpp: In function ‘void rez8(unsigned int, char*)’: user.cpp:219:8: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (nratoi(y)) ^ user.cpp: In function ‘void rez9(unsigned int, char*)’: user.cpp:244:12: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (nratoi(y)) ^ user.cpp: At global scope: user.cpp:271:11: warning: ISO C++ forbids declaration of ‘main’ with no type [-Wreturn-type] main(void) ^