View Compilation Error

0_0_13802824_12425.cpp: In function 'int main()':
0_0_13802824_12425.cpp:100:25: error: 'memset' was not declared in this scope
   memset(fb,0,sizeof(fb));
                         ^
0_0_13802824_12425.cpp:108:24: error: 'strcmp' was not declared in this scope
    if (strcmp(kind,"in")==0) {
                        ^
0_0_13802824_12425.cpp:129:27: error: 'strcmp' was not declared in this scope
    if (strcmp(kind,"query")==0) {
                           ^
0_0_13802824_12425.cpp:132:25: error: 'strcmp' was not declared in this scope
    if (strcmp(kind,"out")==0) {
                         ^