View Compilation Error

0_0_16002001_24777.cpp: In function 'int bellman(int)':
0_0_16002001_24777.cpp:14:26: error: 'memset' was not declared in this scope
  memset(dis,0,sizeof(dis));
                          ^
0_0_16002001_24777.cpp: In function 'int main()':
0_0_16002001_24777.cpp:41:19: error: 'strcmp' was not declared in this scope
    if(strcmp(o,"#")==0)
                   ^
0_0_16002001_24777.cpp:46:21: error: 'strcmp' was not declared in this scope
    if(strcmp("SAF",o)==0)
                     ^