Thread: Searching a keyword...

Im kinda atlost with programming with this: gven a keyword,it will search for any instances of it in a string of Questions until the questions are null,if it finds an instance of it ,it will display the question..pls note that a string of question are seperated by spaces per word...Below are my declarations i just cant figure out how cld do the code....(by the way,am usin linked list on this)
typedef char str20[21];
typedef char str70[71];

typedef struct
{
str70 strQuestions;
str20 strChoices[4];
char cAns;
int nLevel;
}struct_Game;
struct structNode
{
struct_Game sGame;
struct structNode *pGPrev,*pGNext;
};
typedef struct structNode structGNodeType;
typedef structGNodeType *ptrGNode;