View Compilation Error

0_0_25994348_14145.cpp: In function 'int main()':
0_0_25994348_14145.cpp:37:23: error: 'memset' was not declared in this scope
   memset(p,0,sizeof(p));
                       ^
0_0_25994348_14145.cpp:55:9: error: 'l' was not declared in this scope
     for(l=0;l<count;l++)
         ^
0_0_25994348_14145.cpp:60:35: error: 'tmp2' was not declared in this scope
       if(dis(p[tmp1],p[i])!=dis(p[tmp2],p[i]))
                                   ^
0_0_25994348_14145.cpp:62:36: error: 'tmp2' was not declared in this scope
       if(judge(p[i],p[j],p[tmp1],p[tmp2]))
                                    ^