Print the EVEN numbers between 1 to 100 using loop.
Code:
#include<stdio.h>
int main()
{
int i;
for(i = 1; i <= 100; i++)
{
if(i%2==0)
printf("%d\n",i);
}
return 0;
}
Print the numbers between 100 to 200 which are completely divisible by 3 and 5.
Code:
#include<stdio.h>
int main()
{
int i;
for(i = 100; i <= 200; i++)
{
if(i%3 == 0 && i%5 == 0)
{
printf("%d\n",i);
}
}
return 0;
}Write a program to print the following output using loop.
Code:
#include<stdio.h>
int main()
{
int i,j;
for(i = 1; i <= 4; i++)
{
for(j = 1; j <= i; j++)
{
printf("*");
}
printf("\n");
}
return 0;
}Take an integer as input and print it’s multiplication table up to 10. If user gives 5, your output should look like the following example-
5 * 1 = 5
5 * 2 = 10
5 * 3 = 15
.
.
.
5 * 10 = 50
Code:
#include<stdio.h>
int main(){
int n,i;
printf("Enter the input number: \n");
scanf("%d",&n);
printf("********* Multiplication Table of %d *************\n",n);
for(i = 1; i <= 10; i++)
{
printf("%d x %d = %d\n",n,i,n*i);
}
return 0;
}Write a program which will print the summation of the given series-
101 + 99 + 97 + …….. + 3 + 1 = ?
Code:
#include<stdio.h>
int main(){
int i, sum = 0;
for(i = 101; i >= 1; i -= 2)
{
sum=sum+i;
}
printf("%d\n",sum);
return 0;
}Write a program to program to print the following output using loop-
*
Blank Line
* * *
Blank Line
* * * * *
Blank Line
* * * * * *
Code:
#include<stdio.h>
int main()
{
int i,j;
for(i = 1; i <= 7; i++)
{
for(j=1;j<=i;j++)
{
if(i%2==0)
{
printf("Blank Line");
break;
}
else
{
printf("*");
}
}
printf("\n");
}
}Write a program to print the following output using loop.
* * * *
* * *
* *
*
Code:
#include<stdio.h>
int main()
{
int i,j;
for(i = 1; i <= 4; i++)
{
for(j = i;j <= 4; j++)
{
printf("*");
}
printf("\n");
}
return 0;
}Write a program to print the following output using loop-
1 2 3 4 5
1 2 3 4
1 2 3
1 2
1
Code:
#include<stdio.h>
int main()
{
int i,j;
for(i = 5; i >= 1; i--)
{
for(j = 1; j <= i; j++)
{
printf("%d",j);
}
printf("\n");
}
return 0;
}Write a program to display “A” to “Z” using loop .
Code:
#include<stdio.h>
int main()
{
char var;
for(var = 'A'; var <= 'Z'; var++)
{
printf("%c ",var);
}
return 0;
}
Print the summation of squares of all numbers from 5 to 25.
25 + 36 + 49 + 64 …… + 576 + 625 = ?
Code:
#include<stdio.h>
int main()
{
int i, sum = 0;
for(i = 5; i <= 25; i++)
{
sum = sum +(i * i);
}
printf("%d\n",sum);
return 0;
}Write a program which will take an integer N from user and print all the numbers between N to -32. Stop your program when user will give N= -1 as input.
Code:
#include<stdio.h>
int main()
{
int n, i;
while(1){
printf("\nEnter the value of N [input -1 to stop]: \n");
scanf("%d",&n);
if(n == -1)
break;
if(n > -32){
for(i = n; i>= -32; i--)
printf("%d ",i);
}else{
for(i = n; i <= -32; i++){
printf("%d ",i);
}
}
}
return 0;
}Write the output of the following program-
int main(){
int i;
for(i = 10; i < 20; i++){
if(i % 2 == 0)
continue;
printf(“%d “,i);
if(i > 16)
break;
}
return 0;
}
Code:
#include<stdio.h>
int main(){
int i;
for(i = 10; i < 20; i++){
if(i % 2 == 0)
continue;
printf("%d ",i); //Output: 11 13 15 17
if(i > 16)
break;
}
return 0;
}Write a program which will take an integer N as input from user and print Fibonacci series up to N. If user gives input N = 15, you should print-
0 1 1 2 3 5 8 13
Code:
#include<stdio.h>
int main()
{
int n, first = 0, second = 1;
printf("Enter the limit N [ >= 1]: \n");
scanf("%d",&n);
while(first <= n){
printf("%d ",first);
int temp = first;
first = second;
second = second + temp;
}
return 0;
}
Write a program to print the following output using loop.
Code:
#include<stdio.h>
int main(){
int i,j,k,l;
for(i=0;i<3;i++)
{
for(j=0;j<i;j++)
{
printf(" ");
}
for(k=2;k>=i;k--)
{
printf("*");
}
for(l=2;l>i;l--)
{
printf("*");
}
printf("\n");
}
for(i=0;i<2;i++)
{
for(j=2;j>i+1;j--)
{
printf(" ");
}
for(k=0;k<=i+1;k++)
{
printf("*");
}
for(l=0;l<=i;l++)
{
printf("*");
}
printf("\n");
}
return 0;
}
Write a program to print the following output in the given format using loop-
1 1
12 21
123 321
1234 4321
12345 54321
Code:
#include<stdio.h>
int main()
{
int i, j, k;
for(i = 1; i <= 5; i++)
{
for(j = 1; j <= i; j++)
{
printf("%d",j);
}
printf(" ");
for(k = i; k >= 1; k--)
{
printf("%d",k);
}
printf("\n");
}
return 0;
}
Find summation and average of all the numbers which are completely divisible by 3, 5 and 12 between 10 – 500. [Like 60 is divisible by all of those]
Code:
#include<stdio.h>
int main()
{
int i,sum=0,count=0;
float avg;
for(i=10;i<=500;i++)
{
if(i%3==0&&i%5==0&&i%12==0)
{
sum=sum+i;
count++;
}
}
avg=sum/count;
printf("%.2f\n",avg);
return 0;
}
Write a program to produce the following output using loop-
1
2 4
3 6 9
4 8 12 16
5 10 15 20 25
6 12 18 24 30 36
Code:
#include<stdio.h>
int main()
{
int i,j,k,l,m,n;
for(i=1;i<=6;i++)
{
for(j=i;j<=(i*i);j=j+i)
{
printf("%d ",j);
}
printf("\n");
}
return 0;
}
Write a program which will display all the prime numbers between 0 to N( N will be given by the user ).
If user gives N = 20, your code will print the following output-
2 3 5 7 11 13 17 19.
Code:
#include<stdio.h>
int main()
{
int i,j,count=0,n;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
for(j=1;j<=i;j++)
{
if(i%j==0)
count++;
}
if(count==2)
printf("%d ",i);
count=0;
}
return 0;
}