Write a function that calculates the exponential of a number using a Taylor series expansion: xt et = 1+x+ x2 x3 + + 3! + .. 2! Use floating point numbers and calculate out to the 10th term. Your program should print out the exponential of the command line argument. Here is your main function: int main(int argc, char **argv) { double val = atof (argv[1]); printf("exp ($1.3f) $f ", val, exponential (val)); } You will need to write the exponential function. Do not use any of the built-in math functions in the C math library