In following C programs, we will learn about how to print all even numbers between 1 to N using while loop and for loop.
Required Knowledge
C program to print even numbers between 1 to 100 using for loop
#include <stdio.h>
int main() {
int counter;
printf("Even numbers between 1 to 100\n");
for(counter = 1; counter <= 100; counter++) {
/* Even numbers are divisible by 2 */
if(counter%2 == 0) {
/* counter is even, print it */
printf("%d ", counter);
}
}
return 0;
}
Output
Even numbers between 1 to 100 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 100
C program to print even numbers from 1 to N using while loop
#include <stdio.h>
int main() {
int counter;
printf("Even numbers between 1 to 100\n");
counter = 2;
while (counter <= 100) {
printf("%d ", counter);
/* Add 2 to current even number
to get next even number */
counter = counter + 2;
}
return 0;
}
Output
Even numbers between 1 to 100 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 100
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