Question

Write a program with loops that compute

a.The sum of all even numbers between 2 and 100 (inclusive).

b.The sum of all squares between 1 and 100 (inclusive).

c.All powers of 2 from 20 up to 220.

d.The sum of all odd numbers between a and b (inclusive), where a and b are inputs.

Note*: For part d, enter 3 and 21 as input

Output should be:

a. 2550
b. 338350
c.

1.0
2.0
4.0
8.0
...
1048576.05

d. 120

Answer 1

Answer:

Here is the code and screenshots, please let me know if you have any doubts/ clarifications. Go through the comments for better understanding of the code. I am providing you a file called Even_sum.c. If you are on Unix/ Linux platform then use gcc Even_sum.c -lm for compiling the code and ./a.out for running the program. Thank you, Good Luck!!!

Even_sum.c

#include<stdio.h> #include<math.h> int main() { int sum = 0; // Displays the sum for (int i = 2; i<=100; i++) { if ((i%2)==0){ sum = sum + i; } } printf("%d\n", sum); // Displays the sum of all squares between 1-100 int sumOfAllNumbers = 0; for (int i = 1; i<=100; i++) { sumOfAllNumbers = sumOfAllNumbers + i*i; } printf("%d\n", sumOfAllNumbers); // Powers of 2 from 20 to 220 double power = 0; for (int i = 0; i<=20; i++) { power = pow(2,i); printf("%0.1f\n", power); } // sum of all the odd numbers between a & b int a = 3; int b = 21; int sumOfAllOdds = 0; for (int i=a; i<=b; i++){ if (i%2 !=0){ sumOfAllOdds = sumOfAllOdds + i; } } printf("%d\n", sumOfAllOdds); return 1; }

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O/P Screenshot

Even_sum.c Screenshots