C Programming , Do what you can please !

2. Write a piece of C code that reads from "Num.txt" provided. a. Write a function to multiply the elements of the array by 2. b. Find the mean and standard deviation of the data after doubling. c. Output that information to a file called "Mean_Std.dat". Use the code snippet below to read the file: #include #include int main() FILE *fp; fp = fopen ("Num 2.txt","r"); float arr (500); if(fp==NULL) {printf("Error opening file! "); exit(1); } int i; int count; count =0; for(i=0; i