To understand for loop, we will go through an example. Suppose you want to print numbers from 1 to 30, then, you have to write a program that will print all the 30 numbers from 1 to 30. Here you need to write the printf() for 30 times to print all the 30 numbers. For 30 numbers it is easy, but what you will do if you have to print 100 or 1000 or more numbers? Will you write printf() for 100 or 1000 times?
The answer is no, we will not write printf() function for 1000 times we will just use for loop to print all the 1000 numbers. Here is the implementation of for loop in c program :
- #include<stdio.h>
- int main()
- {
- int n=100;
- for(int i=1;i<=n; i++)
- {
- printf("%d\t", i);
- }
- return 0;
- }
Output:
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