Hello, I need help on two questions! I appreciate all help !

1.) Using pseudocode, pseudo-C, or C, write code below that does the following:

SUMMATION: Continuously prompt the user for integer input. Add the value entered to a growing sum. Stop prompting for input when the user enters -1.

Show the result

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2.) Using pseudocode, pseudo-C or C, write code that solves the following problem:

Input 1000 values from the user. Once finished with input display the highest and lowest value entered.

THANK YOU!!!!!!