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diff --git a/Let_us_C/chapter-3.ipynb b/Let_us_C/chapter-3.ipynb new file mode 100644 index 00000000..eae87c95 --- /dev/null +++ b/Let_us_C/chapter-3.ipynb @@ -0,0 +1,616 @@ +{
+ "metadata": {
+ "name": "chapter-3.ipynb"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "<h1>Chapter 3: The Loop Control Structure <h1>"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "<h3>Simple Interest using While Loop, Page number: 99<h3>\n"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "'''Calculation of simple interest for 3 sets of p, n and r (while loop)'''\n",
+ "\n",
+ "#Variable declaration\n",
+ "count = 1\n",
+ "pr = [1000,2000,3500]\n",
+ "yr = [5,5,5]\n",
+ "intr = [13.5,13.5,3.5]\n",
+ "\n",
+ "# while loop\n",
+ "while count <= 3:\n",
+ " #Input from the user\n",
+ " #p,n,r = raw_input(\"Enter values of p, n and r : \").split()\n",
+ " p = pr[count-1] # principle\n",
+ " n = yr[count-1] # number of years\n",
+ " r = intr[count-1]# rate of interest\n",
+ "\n",
+ " #Calculation\n",
+ " si = p * n * r / 100 ; #formula for simple interest\n",
+ "\n",
+ " #Result\n",
+ " print \"Simple interest = Rs.\",si \n",
+ "\n",
+ " #Increment count\n",
+ " count = count + 1\n",
+ " \n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Simple interest = Rs. 675.0\n",
+ "Simple interest = Rs. 1350.0\n",
+ "Simple interest = Rs. 612.5\n"
+ ]
+ }
+ ],
+ "prompt_number": 1
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "<h3>Simple Interest using For Loop , Page number: 109<h3>\n"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "'''Calculation of simple interest for 3 sets of p, n and r (for loop)'''\n",
+ "\n",
+ "pr = [1000,2000,3500]\n",
+ "yr = [5,5,5]\n",
+ "intr = [13.5,13.5,3.5]\n",
+ "\n",
+ "#for loop\n",
+ "for count in range(1, 4):\n",
+ " #Input from the user\n",
+ " #p,n,r = raw_input(\"Enter values of p, n and r : \").split()\n",
+ " p = pr[count-1] # principle\n",
+ " n = yr[count-1] # number of years\n",
+ " r = intr[count-1]# rate of interest\n",
+ " \n",
+ " #Calculation\n",
+ " si = p * n * r / 100 ; #formula for simple interest\n",
+ "\n",
+ " #Result\n",
+ " print \"Simple interest = Rs.\",si "
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Simple interest = Rs. 675.0\n",
+ "Simple interest = Rs. 1350.0\n",
+ "Simple interest = Rs. 612.5\n"
+ ]
+ }
+ ],
+ "prompt_number": 2
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "<h3>Nested For Loops , Page number: 114<h3>\n"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "'''Demonstration of nested loops'''\n",
+ "\n",
+ "#nested for loops\n",
+ "for r in range(1,4): #outer loop\n",
+ " for c in range(1,3): #inner loop\n",
+ " s = r + c #find the sum\n",
+ " print \"r = %d c = %d sum = %d\" % (r, c, s) #Display result\n",
+ " \n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "r = 1 c = 1 sum = 2\n",
+ "r = 1 c = 2 sum = 3\n",
+ "r = 2 c = 1 sum = 3\n",
+ "r = 2 c = 2 sum = 4\n",
+ "r = 3 c = 1 sum = 4\n",
+ "r = 3 c = 2 sum = 5\n"
+ ]
+ }
+ ],
+ "prompt_number": 3
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "<h3>Do While Loop , Page number: 116<h3>"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "'''Execution of a loop an unknown number of times'''\n",
+ "\n",
+ "#do while loop\n",
+ "while True:\n",
+ " #num = raw_input(\"Enter a number: \")\n",
+ " num = 11\n",
+ " print \"square of %d is %d\"%(num, num * num )\n",
+ " print \"Want to enter another number y/n: \" \n",
+ " another = 'n'\n",
+ " print another\n",
+ " if another == 'y':\n",
+ " continue\n",
+ " else:\n",
+ " break\n",
+ " "
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "square of 11 is 121\n",
+ "Want to enter another number y/n: \n",
+ "n\n"
+ ]
+ }
+ ],
+ "prompt_number": 5
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "<h3>Do While using For Loop, Page number: 117<h3>"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "'''odd loop using a for loop'''\n",
+ "\n",
+ "#Variable declaration\n",
+ "another = 'y'\n",
+ "\n",
+ "#do while loop\n",
+ "import sys\n",
+ "for i in range(1,10000): #infinte loop\n",
+ " #num = raw_input(\"Enter a number: \")\n",
+ " num = 11\n",
+ " print \"square of %d is %d\"%(num, num * num )\n",
+ " print \"Want to enter another number y/n: \" \n",
+ " another = 'n'\n",
+ " print another\n",
+ " if another == 'y':\n",
+ " continue\n",
+ " else:\n",
+ " break\n",
+ " \n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "square of 11 is 121\n",
+ "Want to enter another number y/n: \n",
+ "n\n"
+ ]
+ }
+ ],
+ "prompt_number": 7
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "<h3>Do While using While Loop, Page number: 117<h3>"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "'''odd loop using a while loop'''\n",
+ "\n",
+ "#Variable declaration\n",
+ "another = 'y'\n",
+ "\n",
+ "#do while loop\n",
+ "while another == 'y':\n",
+ " #num = raw_input(\"Enter a number: \")\n",
+ " num = 11\n",
+ " print \"square of %d is %d\"%(num, num * num )\n",
+ " print \"Want to enter another number y/n: \" \n",
+ " another = 'n'\n",
+ " print another\n",
+ " \n",
+ " \n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "square of 11 is 121\n",
+ "Want to enter another number y/n: \n",
+ "n\n"
+ ]
+ }
+ ],
+ "prompt_number": 8
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "<h3>Prime Number, Page number: 118<h3>\n"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "'''Write a program to determine whether a number is prime or not.\n",
+ "A prime number is one, which is divisible only by 1 or itself.'''\n",
+ "\n",
+ "#Input from user\n",
+ "#num = raw_input(\"Enter a number: \")\n",
+ "num = 11\n",
+ "\n",
+ "#Variable declaration\n",
+ "i = 2\n",
+ "\n",
+ "#while loop\n",
+ "while i <=(num - 1):\n",
+ " if num % i == 0:\n",
+ " print \"Not a prime number\" #Display if not prime number\n",
+ " break\n",
+ " i += 1\n",
+ "\n",
+ "#Display if prime number\n",
+ "if i == num:\n",
+ " print \"Prime number\" "
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Prime number\n"
+ ]
+ }
+ ],
+ "prompt_number": 9
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "<h3>Break Statement , Page number: 119<h3>"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "'''The following program illustrates the fact that the keyword break,\n",
+ "breaks the control only from the loop in which it is placed.'''\n",
+ "\n",
+ "#Variable declaration\n",
+ "i = 1\n",
+ "j = 1\n",
+ "\n",
+ "#while loops\n",
+ "while i <= 100 : #outer loop\n",
+ " i = i+1\n",
+ " while j <= 200 : #inner loop\n",
+ " j = j+1\n",
+ " if j == 150:\n",
+ " break #break statement in inner loop\n",
+ " else:\n",
+ " print i, j \n",
+ " \n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "2 2\n",
+ "2 3\n",
+ "2 4\n",
+ "2 5\n",
+ "2 6\n",
+ "2 7\n",
+ "2 8\n",
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+ "3 151\n",
+ "3 152\n",
+ "3 153\n",
+ "3 154\n",
+ "3 155\n",
+ "3 156\n",
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+ "3 200\n",
+ "3 201\n"
+ ]
+ }
+ ],
+ "prompt_number": 11
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "<h3>Continue Statement , Page number: 120<h3>\n"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "'''The following program illustrates the use of the 'continue' statement'''\n",
+ "\n",
+ "#for loops\n",
+ "for i in range(1,3):\n",
+ " for j in range(1,3):\n",
+ " if i==j :\n",
+ " continue # continue statement\n",
+ " print i , j\n",
+ " \n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "1 2\n",
+ "2 1\n"
+ ]
+ }
+ ],
+ "prompt_number": 12
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+}
\ No newline at end of file |