Example
Input
Input upper limit to print natural numbers: 10
Output
Natural numbers from 1 to 10: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
/**
* C program to print all natural numbers from 1 to n using while loop
*/
#include <stdio.h>
int main()
{
int i, end;
/*
* Input a number from user
*/
printf("Print all natural numbers from 1 to : ");
scanf("%d", &end);
/*
* Print natural numbers from 1 to end
*/
i=1;
while(i<=end)
{
printf("%d\n", i);
i++;
}
return 0;
}
/*
Output :
Print all natural numbers from 1 to : 100
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
*/