0_0_34595157_30448.cpp: In function 'int main()': 0_0_34595157_30448.cpp:12:16: error: 'na' was not declared in this scope memset(na,0,sizeof(na)); ^ 0_0_34595157_30448.cpp:13:16: error: 'nb' was not declared in this scope memset(nb,0,sizeof(nb)); ^