2. Given the following code, design a C program - (1) moving a file pointer using fseek- 15 points (2) saving this sentence "This is a C program" to sample.txt using fputs with fp - 15 points. Do not modify the following code. You have to add your code to the given C program. int main() { FILE *fp; fp = fopen("sample.txt", "w+"); fputs("This is a CSIT315", fp); return(0); }