c-lang/class3.c at master · CodeBreakersGCEK/c-lang · GitHub

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//1.wap to print first 10 natural no using for loop
#include <stdio.h>
int main() {
  int i;
  for (i = 1; i <= 10; i++)
    printf("%d ", i);
  return 0;
}

//or using while loop
#include <stdio.h>
int main() {
  int i = 0;
  while (i < 10) {
    printf("%d ", i);
    i++;
  }

  return 0;
}

//using do-while loop
#include <stdio.h>
int main() {
  int i = 0;
  do {
    printf("%d ", i);
    ++i;
  } while (i < 10);
  return 0;
}

//2.wap to print first 10 natural no in reverse order without using decrement operator
#include <stdio.h>
int main() {
  int i;
  for (i = 1; i <= 10; i++)
    printf("\n %d ", 11 - i);
  return 0;
}

// 3.wap to print first 10 natural no in reverse order
#include <stdio.h>
int main() {
  int i;
  for (i = 10; i > 0; i--)
    printf("\n %d ", i);
  return 0;
}

//4.wap to print first n odd natural no
#include <stdio.h>
int main() {
  int i, n;
  printf("enter a no ");
  scanf("%d", &n);
  for (i = 1; i <= n; i++)
    printf("\n %d ", 2 * i - 1);
  return 0;
}

//5.wap to print  first n even natural no
#include <stdio.h>
int main() {
  int i, n;
  printf("enter a no ");
  scanf("%d", &n);
  for (i = 1; 2 * i <= 2 * n; i++)
    printf("\n%d", 2 * i);
  return 0;
}