ASSIGNMENT - 5
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1. State use of loop statement in C Program.
A1: loop statements are used to execute a block of code
repeatedly as long as a certain condition is true.
2. Explain syntax of for loop.**
A2: for (initialization; condition; increment / decrement;) {
// code to be repeated
}
Initialization: It indicates the starting point of the loop.
Condition: It determines when loop will stop.
Increment / Decrement: How the value of the counter variable
will change.
3. Compare while loop and do-while loop.**
A3: In a while loop, if the initial condition is false, the
loop block will not be executed at all.
In a do-while loop, the loop block is executed at least
once, regardless of the initial condition.
4. Explain while loop with example.
The while loop in C is used to repeatedly execute a block of
code as long as a specified condition is true.
Example:
while (i < 5)
{
printf("%d\n", i);
i++;
}
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5. Write syntax for nested for loop. Give any one
example. OR Explain for loop and nested for loop with example. ***
A5: Syntax:
for (initialization_1;
condition_1; increment / decrement;) {
// code before the inner loop
for (initialization_2; condition_2; increment
/ decrement;) {
// code to be repeated (inner loop)
}
// code after the inner loop
}
Example:
for (int i = 1; i <= 5; i++)
{
for (int j = 1; j
<= 10; j++)
{
printf("%d * %d = %d\n", i, j, i * j);
}
printf("\n");
}
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6. Explain difference between entry control loop and exit
control loop with suitable example.
OR Explain exit control loop with syntax and flowchart.
In entry control loops, the condition is checked
before entering the loop.
In exit control loops, the condition is checked
after executing the loop body.
Entry Control Loops:
for (int i = 0; i < 5; i++) {
printf("%d\n", i);
}
int j = 0;
while (j < 5) {
printf("%d\n", j);
j++;
}
Exit Control Loops:
do {
printf("%d\n", i);
i++;
} while
(i < 5);
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7. Explain difference between while and do while loop.
A7: In a while loop, if the initial condition is false, the
loop block will not be executed at all.
In a do-while loop, the loop block is executed at least
once, regardless of the initial condition.
8. The For loop Continues to execute as long as the
condition is True.
9. Which is not a loop structure?
(I)
Repeat until (II)for (III) do while (IV) while
10. Why loop control statements are used in C?
A10: Loop control statements in C, such as for, while, and
do-while, are used to control the flow of execution in a program by repeatedly
executing a block of code based on a specified condition.
11. WAP to print 1 to n and n to 1 numbers.
#include <stdio.h>
#include <conio.h>
void main()
{
clrscr();
int n;
printf("Enter n = ");
scanf("%d", &n);
for (int i = 1; i <= n; i++)
{ printf("%d\t",
i);}
printf("\n");
for (int i = n; i >= 1; i--)
{ printf("%d\t", i);}
getch();
}
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12. WAP to print to print sum of 1 to n numbers.
#include <stdio.h>
#include <conio.h>
void main()
{
clrscr();
int n, sum = 0;
printf("Enter n = ");
scanf("%d", &n);
for (int i = 1; i <= n; i++)
{ sum =
sum + i;}
printf("\nSum = %d", sum);
getch();
}
13. WAP to print following series using loop 1 3 5 7 9
…..55.*
#include <stdio.h>
#include <conio.h>
void main()
{
clrscr();
for (int i = 1; i <= 55; i++)
{ if (i % 2 != 0)
printf("%d\t",
i);}
getch();
}
14. WAP to print the Fibonacci series up to given
number.**
#include <stdio.h>
#include <conio.h>
void main()
{
clrscr();
int num, a = 1, b = 0, sum = 0;
printf("Enter the num = ");
scanf("%d", &num);
for (int i = 1; i <= num; i++)
{
sum = a + b;
printf("%d\t",
sum);
a = b; b = sum;
}
getch();
}
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15. WAP to print sum of digits of a given number
(i.e. 123 = 1 + 2 + 3 = 6 )*
#include <stdio.h>
#include <conio.h>
void main()
{
int num, r, sum = 0;
printf("Enter the num = ");
scanf("%d", &num);
while (num > 0)
{
r = num % 10;
sum = sum + r;
num = num / 10;
}
printf("\nSum of digits = %d",
sum);
getch();
}
16. WAP to print even number from 1 to 100.*
#include <stdio.h>
#include <conio.h>
void main()
{
for (int i = 1; i <= 100; i++)
{
if (i % 2 == 0)
printf("%d\t",
i);
}
getch();
}
17. WAP to print prime number from 1 to 100.**
#include <stdio.h>
#include <conio.h>
void main()
{
int i, j;
for (i = 1; i <= 100; i++) {
for (j = 2; j < i;
j++) {
if (i %
j == 0)
break;
}
if (i == j)
printf("%d\t",
i);
}
getch();
}
18. WAP to find given number is prime or not.**
#include <stdio.h>
#include <conio.h>
void main()
{
clrscr();
int num, i;
printf("Enter num = ");
scanf("%d", &num);
for (i = 2; i < num; i++)
{
if (num % i == 0)
break;
}
if (i == num)
printf("%d is
prime.", num);
else
printf("%d is not
prime.", num);
getch();
}
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19. WAP to reverse the given number (i.e. 123 = 321 ).***
#include <stdio.h>
#include <conio.h>
void main()
{
int num, r;
printf("Enter the num = ");
scanf("%d", &num);
while (num > 0) {
r = num % 10;
printf("%d",
r);
num = num / 10;
}
getch();
}
20. WAP to read two integer numbers and the arithmetic
operation performed between two numbers as character. Calculate and print the
result as for e.g. 40,50 * given as input the output should be 40*50=200.*
#include <stdio.h>
#include <conio.h>
void main()
{
int num1, num2;
char operation;
printf("Enter the num1 = ");
scanf("%d", &num1);
printf("Enter the num2 = ");
scanf("%d", &num2);
printf("Enter the Operation = ");
scanf(" %c", &operation);
switch (operation)
{
case '+':
printf("%d + %d =
%d\n", num1, num2, num1 + num2);
break;
case '-':
printf("%d - %d =
%d\n", num1, num2, num1 - num2);
break;
case '*':
printf("%d * %d =
%d\n", num1, num2, num1 * num2);
break;
case '/':
printf("%d / %d =
%.2f\n", num1, num2, (float)num1 / num2);
break;
default:
printf("Invalid
operation");
}
getch();
}
21. WAP to find given number is Armstrong or not.*****
#include <stdio.h>
#include <conio.h>
void main()
{
clrscr();
int num, r, temp, sum = 0;
printf("Enter the num = ");
scanf("%d", &num);
temp = num;
while (num > 0)
{
r = num % 10;
sum = sum + r * r * r;
num = num / 10;
}
if (temp == sum)
printf("\n%d is armstrong.",
temp);
else
printf("\n%d is
not armstrong.", temp);
getch();
}
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22. WAP to print given pattern
Pattern (A):
#include <stdio.h>
#include <conio.h>
void main()
{
clrscr();
for (int i = 1; i <= 4; i++) {
for (int j = 1; j <=
i; j++) {
printf("%d
", i);
}
printf("\n");
}
getch();
}
Pattern (B):
#include <stdio.h>
#include <conio.h>
void main()
{
clrscr();
for (int i = 1; i <= 4; i++) {
for (int j = 1; j <=
i; j++) {
printf("%d
", j);
}
printf("\n");
}
getch();
}
Pattern (c):
#include <stdio.h>
#include <conio.h>
void main()
{
int k = 1;
for (int i = 1; i <= 4; i++) {
for (int j = 1; j <=
i; j++) {
printf("%d
", k);
k++;
}
printf("\n");
}
getch();
}
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Pattern (D):
#include <stdio.h>
#include <conio.h>
void main()
{
clrscr();
for (int i = 1; i <= 4; i++) {
for (int j = 1; j <=
i; j++) {
printf("*");
}
printf("\n");
}
getch();
}
Pattern (E):
#include <stdio.h>
#include <conio.h>
void main()
{
int k = 1;
for (int i = 1; i <= 4; i++) {
for (int j = 1; j <=
i; j++) {
printf("%c
", 64 + j);
k++;
}
printf("\n");
}
getch();
}
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Q23:
Pattern (A):
#include <stdio.h>
#include <conio.h>
void main()
{
for (int i = 1; i <= 5; i++) {
for (int j = 5; j >=
i; j--) {
printf("
");
}
for (int j = 1; j <=
i; j++) {
printf("
%d", j);
}
printf("\n");
}
getch();
}
Pattern (B):
#include <stdio.h>
#include <conio.h>
void main()
{
for (int i = 1; i <= 5; i++) {
for (int j = 5; j >=
i; j--) {
printf("
");
}
for (int j = 1; j <=
i; j++) {
printf("
*");
}
printf("\n");
}
getch();
}
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Pattern (C):
#include <stdio.h>
#include <conio.h>
void main()
{
int k = 1;
for (int i = 1; i <= 5; i++) {
for (int j = 5; j >=
i; j--) {
printf("
");
}
for (int j = 1; j <=
i; j++) {
printf("
%d", k);
k++;
}
printf("\n");
}
getch();
}
Pattern (D):
#include <stdio.h>
#include <conio.h>
void main()
{
clrscr();
for (int i = 5; i >= 1; i--) {
for (int j = 1; j <=
i; j++) {
printf("*
");
}
printf("\n");
}
getch();
}
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Program (E):
#include <stdio.h>
#include <conio.h>
void main()
{
for (int i = 1; i <= 5; i++) {
for (int j = 1; j <=
i; j++) {
(j % 2 ==
0) ? printf("0") : printf("1");
}
printf("\n");
}
getch();
}
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