View Compilation Error

0_0_36997313_30795.cpp: In function 'int main()':
0_0_36997313_30795.cpp:31:35: error: 'strcmp' was not declared in this scope
                 if(strcmp(str[j],s)==0)
                                   ^
0_0_36997313_30795.cpp:36:39: error: 'strcpy' was not declared in this scope
                         strcpy(color,s);
                                       ^
0_0_36997313_30795.cpp:46:32: error: 'strcpy' was not declared in this scope
                 strcpy(str[k],s);
                                ^