Compilare: main.cpp: In function 'int main()': main.cpp:9:16: warning: variable 'cp' set but not used [-Wunused-but-set-variable] int p, n = 1, cp, cn, k, np = 0, nn = 0; ^~ main.cpp:9:20: warning: variable 'cn' set but not used [-Wunused-but-set-variable] int p, n = 1, cp, cn, k, np = 0, nn = 0; ^~ main.cpp:32:17: warning: ignoring return value of 'int system(const char*)', declared with attribute warn_unused_result [-Wunused-result] system("pause"); ^