1) I open the input file
2) I read it
3) Store an 2D array
4) split into tokens
5) firslt strtok for "n"  and store it
6) secondly strtok for ":" ignore it
7)and then strtok for "," and store it
8) I want to search a word for every single line (which I stored it step 5)
9) For searching I use strstr but I can't do it.

int main (){

FILE *fp;
fp=fopen("C:\input.txt","r");
char *name[10][10];
char row[100];
char *token,*tkn,*tk;
int h=0, f=0, l=0;
for(h=0;h<9;h++){
    for(f=0;f<9;f++)
    name[h][f]=NULL;
}
while(fgets(row,sizeof(row),fp)){
    token=strtok(row,"n");
    name[l][0] = strdup(token);
    //printf("%s",name[l][0]);
    tkn=strtok(token,":");
    tk=strtok(tkn,",");
    isim[l][1]=strdup(tk);
    if(strstr(name[l][1],name[l+1][0])==0 || strstr(name[l][1],name[l+2][0])==0 || strstr(name[l][1],name[l+3][0])==0){

    }
    l++;
}

fclose(fp);
}

George    :Math1,History2,Math2
ELizabeth :Math2,Germany1,spanish1
Adam      :Germany1,History2,Math1