View Compilation Error

0_0_20748528_27157.cpp: In function 'int main()':
0_0_20748528_27157.cpp:10:29: error: 'memset' was not declared in this scope
   memset(dist,0,sizeof(dist));
                             ^
0_0_20748528_27157.cpp:12:8: error: 'j' was not declared in this scope
    for(j=0;j<1001;j++){
        ^