# Introduction to Programming in C Week 1

Session: JAN-APR 2024

Course Name: Introduction to Programming in C

#### These are Introduction to Programming in C Assignment 1 Answers

Question 1
Problem Statement

You have a certain number of 100 rupee notes, 10 rupee notes and 1 rupee notes with you.
There is an item you want to buy whose price is given to you.
Write a program to find if the item is affordable, that is the price of the item is less than or equal to the current money you have

Input
Four non negative integers.
The first input is an integer representing the number of 100 rupee notes.
The second input is an integer representing the number of 10 rupee notes.
The third input is an integer representing the number of 1 rupee notes.
The fourth input is an integer representing the price of the item.
Output
You have to output 1 if the item is affordable.
You have to output 0 if the item is not affordable.

Solution:

``````#include <stdio.h>

int is_affordable(int hundred_notes, int ten_notes, int one_notes, int item_price) {
int total_money = (hundred_notes * 100) + (ten_notes * 10) + one_notes;
return (total_money >= item_price) ? 1 : 0;
}

int main() {
int hundred_notes, ten_notes, one_notes, item_price;

scanf("%d", &hundred_notes);
scanf("%d", &ten_notes);
scanf("%d", &one_notes);
scanf("%d", &item_price);

int result = is_affordable(hundred_notes, ten_notes, one_notes, item_price);
printf("%d", result);

return 0;
}
``````

These are Introduction to Programming in C Assignment 1 Answers

Question 2
Problem Statement

Given three distinct integers a b and c, write a C program to find the second largest number among them.
Input
Three distinct integers a b c.
The first input is the integer a.
The second input is the integer b.
The third input is is the integer c.
Output
The second largest among a, b and c

Solution:

``````#include <stdio.h>

int main() {
int a, b, c;

scanf("%d", &a);
scanf("%d", &b);
scanf("%d", &c);

int second_largest;

if ((a > b && a < c) || (a < b && a > c)) {
second_largest = a;
} else if ((b > a && b < c) || (b < a && b > c)) {
second_largest = b;
} else {
second_largest = c;
}

printf("%d", second_largest);

return 0;
}``````

These are Introduction to Programming in C Assignment 1 Answers

Question 3
Problem Statement

Given the coefficients of a pair of linear equations,
a1x+b1y=c1
a2x+b2y=c2
Find the solutions to x and y
Input
Input consists two lines.
The first line contains coefficients of first equation, a1 b1 c1 in that order.
The second line contains coefficients of second equation, a2 b2 c2 in that order.
Output
The solutions to x and y.

Solution:

``````#include <stdio.h>

int main() {
int a1, b1, c1;
int a2, b2, c2;

scanf("%d %d %d", &a1, &b1, &c1);
scanf("%d %d %d", &a2, &b2, &c2);
int det = a1 * b2 - a2 * b1;

if (det == 0) {
printf("The system of equations has no unique solution.\n");
} else {
int x = (int)(c1 * b2 - c2 * b1) / det;
int y = (int)(a1 * c2 - a2 * c1) / det;
printf("%d %d", x, y);
}

return 0;
}``````

These are Introduction to Programming in C Assignment 1 Answers

Session: JAN-APR 2023

Course Name: Introduction to Programming in C

Question 1

#### You have a certain number of 100 rupee notes, 10 rupee notes and 1 rupee notes with you.There is an item you want to buy whose price is given to you.Write a program to find if the item is affordable, that is the price of the item is less than or equal to the current money you have.

Input
—–
Four non-negative integers.
The first input is an integer representing the number of 100 rupee notes.
The second input is an integer representing the number of 10 rupee notes.
The third input is an integer representing the number of 1 rupee notes.
The fourth input is an integer representing the price of the item.
Output
——
You have to output 1 if the item is affordable.
You have to output 0 if the item is not affordable.

#### These are NPTEL Introduction to Programming in C Assignment 1 Answers

Solution:

``//Code``

#### These are NPTEL Introduction to Programming in C Assignment 1 Answers

Question 2

You are given two positive integers, say M and N.
Check whether M is an exact multiple of N, without using loops.
Input
—–
Two positive integers, say M and N.
Output
——
You have to output 0 if M is not a multiple of N.
You have to output 1 if M is a multiple of N.

Solution:

``//Code``

These are Introduction to Programming in C Assignment 1 Answers

Question 3

Given three integers a b and c, find if they are strictly increasing/decreasing or not.
Input
——-
Triplet of three integers (a,b,c)
Output
———
You have to output 1 if they are either in strictly increasing (a>b>c) or decreasing (a<b<c) order.
Output 0, otherwise.

Solution:

``//Code``

These are Introduction to Programming in C Assignment 1 Answers