View Compilation Error

0_0_28374452_32758.cpp: In function 'int main()':
0_0_28374452_32758.cpp:12:3: error: 'c' was not declared in this scope
   c[4]='\0';
   ^
0_0_28374452_32758.cpp:29:23: error: 'memset' was not declared in this scope
   memset(c,0,sizeof(c));
                       ^