Part 1- Substance Test Table 1 below shows the normal boiling points of several substances. Write a C program that prompts the user for the observed boiling point of a substance in degree Celsius (°C) (as an integer), and identifies the substance if the observed boiling point is within t°C of the expected boiling point, where t is a threshold defined by the user. If the data input is not within t°C of any of the boiling points in the table, the program should output the message: Substance unknown.

3. The formula for determining compound interest is:  A represents the amount to earn; P is the principle that is initially invested; r is the interest rate earned; n is the number of times the interest is compounded; and t is the number of time periods for the investment. Write a program that prompts the user to enter P, r, n and t. The program should output the amount earned on the investment. 4. Look up the Pythagorean theorem if you are not already familiar with it. Use the following formula to solve for c in the formula: c = √a2 + b2. Use the proper functions from the cmath header file. Be sure to output the result.l

The code is not printing the correct result. Please explain to me step by step.

Part 1– Substance Test Table 1 below shows the normal boiling points of several substances. Write a C program that prompts the user for the observed boiling point of a substance in degree Celsius (°C) (as an integer), and identifies the substance if the observed boiling point is within t°C of the expected boiling point, where t is a threshold defined by the user. If the data input is not within t°C of any of the boiling points in the table, the program should output the message: Substance unknown. Here is a sample output from an execution of the program: Table 1: Substances and their normal boiling points. Substance Normal boiling point Water 100 Mercury 357 Copper 1187 Silver 2193 Gold 2660 Enter the threshold in Celsius: 10 Enter the observed boiling point in Celsius: 2668 The substance you tested is: Gold Here is another example: Enter the threshold in Celsius: 30 Enter the observed boiling point in Celsius: 1156 Substance unknown. Note: you may assume that the entered values by the…