Write a program (WAP) that will print following series upto Nth terms.
1, ‐2, 3, ‐4, 5, ‐6, 7, ‐8, 9, ‐10, 11, ‐12, 13, ‐14, …….
input: 3
output: 1, -2, 3
(Using for loop in C)
Answers
Answer:
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#
include
<stdio.h>
int
main
()
{
int
N;
printf
(
"Enter the value of N: "
);
scanf
(
"%d"
, &N);
for
(
int
i=
1
; i<=N; i++) {
if
(i%
2
==
0
) {
printf
(
"%d, "
, -i);
}
else
{
printf
(
"%d, "
, i);
}
}
return
0
;
}
In this program, we first take the value of N as input from the user. Then we run a for loop from 1 to N, and for each value of i, we check whether it is even or odd using the modulo operator (%). If i is even, we print -i, else we print i.
For example, if the user inputs 3, the output will be "1, -2, 3," as expected.
Note: We use the comma after each number to separate them. If you want to remove the comma after the last number, you can modify the program accordingly.
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