View Compilation Error

0_0_16547142_32605.cpp: In function 'int main()':
0_0_16547142_32605.cpp:18:25: error: 'memset' was not declared in this scope
   memset(dp,0,sizeof(dp));
                         ^
0_0_16547142_32605.cpp:19:13: error: 'strlen' was not declared in this scope
   k=strlen(a);h=strlen(b);
             ^