basics

Author: shreyamalogi

01_datatypes/datatypes.cpp

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+//author :shreyamalogi
+
+/*
+
+
+
+*/
+
+#include<iostream>
+using namespace std;
+
+int main(){
+
+    int a; //declaration
+    a=12; //initialisation
+
+    cout<<"size of int "<<sizeof(a)<<endl;
+
+    float b;
+    cout<<"size of float "<<sizeof(b)<<endl;
+
+    char c;
+    cout<<"size of char "<<sizeof(c)<<endl;
+
+    bool d;
+    cout<<"size of bool "<<sizeof(d)<<endl;
+
+    short int si;
+    long int li;
+    cout<<"size of shortint "<<sizeof(si)<<endl;
+    cout<<"size of longint "<<sizeof(li)<<endl;
+
+    
+
+    return 0;
+}

02_if else/I_01_if else.cpp

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+//author :shreyamalogi
+
+// if else
+
+#include<iostream>
+using namespace std;
+
+int main()
+{
+	int n=15;
+	if(n>10)
+	{
+		cout<<"greater";
+	}
+	else
+	{
+		cout<<"smaller";
+	}
+	return 0;
+}
+
+//greater

02_if else/I_02_if elseif else.cpp

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+//author :shreyamalogi
+
+/*
+print greater than elements
+use if else lader
+
+*/
+
+
+//IF-ELSEIF-ELSE
+
+#include<iostream>
+using namespace std;
+
+int main ()
+{
+	int tt;
+	cin>>tt;
+	while(tt--){
+		
+	int n;
+	cin>>n;
+	
+	if(n>1 && n<10)
+      cout<<"greater than 1 and less than 10";
+		
+	else if (n>=20 && n<=30)
+		cout<<"greater than 20 nad less than 30 ";
+		
+	else
+		cout<<"greater than 30";
+	}
+	return 0;
+}
+
+//
+//3
+//2
+//greater than 1 and less than 10
+//21
+//greater than 20 nad less than 30
+//65
+//greater than 30
+

02_if else/I_03_armstrong no.cpp

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+//author :shreyamalogi
+
+//armstrong number (cubes and add)
+
+
+//Armstrong number is a number that is equal to the sum of cubes of its digits. 
+//For example 0, 1, 153, 370, 371 and 407 are the Armstrong numbers
+
+#include<iostream>
+#include<math.h>
+using namespace std;
+
+int main(){
+	int n;
+	cin>>n;
+	
+	int sum=0;
+	int originaln=n;
+	while(n>0){
+		int lastdigit = n%10;
+		sum+= pow(lastdigit, 3);
+		n = n/10;
+	}
+	
+	if(sum==originaln){
+		cout<<"armstrong"<<endl;
+	}
+	else{
+		cout<<"not armstrong"<<endl;
+	}
+	
+	
+	return 0;
+}
+
+//
+//20
+//not armstrong

02_if else/I_04_nested if else (check max).cpp

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+//author :shreyamalogi
+
+/*
+
+check the maximum from three given numbers
+using nested if else
+
+*/
+
+
+#include<bits/stdc++.h>
+
+using namespace std;
+
+int main()
+{
+	int a,b,c;
+	cin>>a>>b>>c;
+	
+	//a is greater than b
+	if(a>b){
+		if(a>c){
+			cout<<a<<endl;
+		}
+		else{
+			cout<<c<<endl;
+		}
+	}
+	
+	//b is greater than a (compare b and c)
+	else {
+		if(b>c)
+			cout<<b<<endl;
+		else
+			cout<<c<<endl;
+		}
+	
+     return 0;
+}
+
+
+//12 56 32
+
+//56
+

02_if else/I_05_oddeven.cpp

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+//author :shreyamalogi
+
+/*
+
+check if it odd or even using 
+if lese statements
+
+*/
+
+
+#include<bits/stdc++.h>
+
+using namespace std;
+
+int main()
+{
+	int n;
+	cin>>n;
+	
+	if(n%2!=0)
+		cout<<"odd"<<endl;
+	else
+		cout<<"even"<<endl;
+		
+     return 0;
+}
+

02_if else/I_06_triangle type.cpp

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+//author :shreyamalogi
+//which type of triangle it is
+
+#include <iostream>
+using namespace std;
+
+int main()
+{
+
+    int sidea, sideb, sidec;
+    cout << "Input three sides of triangle: \n ";
+    cin >> sidea >> sideb >> sidec;
+
+    if (sidea == sideb && sideb == sidec)
+    {
+        cout << "This is an equilateral triangle. \n ";
+    }
+    else if (sidea == sideb || sidea == sidec || sideb == sidec)
+    {
+        cout << "This is an isosceles triangle. \n ";
+    }
+    else
+    {
+        cout << "This is a scalene triangle. \n ";
+    }
+
+    return 0;
+}
+
+
+// 12 3 4
+//This is a scalene triangle.
+
+// 1 2 2
+//This is an isosceles triangle.
+
+// 12 12 12
+//This is an equilateral triangle.

02_if else/I_07_vowels and consonants.cpp

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+//author :shreyamalogi
+
+/*
+
+
+
+*/
+
+
+#include <iostream>
+using namespace std;
+
+int main()
+{
+    char c;
+    int isLowercaseVowel, isUppercaseVowel;
+
+    cout << "Enter an alphabet: ";
+    cin >> c;
+
+    isLowercaseVowel = (c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u');
+
+    isUppercaseVowel = (c == 'A' || c == 'E' || c == 'I' || c == 'O' || c == 'U');
+
+    if (isLowercaseVowel || isUppercaseVowel)
+        cout << c << " is a vowel.";
+    else
+        cout << c << " is a consonant.";
+
+    return 0;
+}
+
+
+//Enter an alphabet: a
+//a is a vowel.
+
+//Enter an alphabet: k
+//k is a consonant.
+

03_loops/L_01_while loop for 10 times.cpp

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+//author :shreyamalogi
+
+//while loop
+//infinite loop for 10 times
+
+#include<iostream>
+
+using namespace std;
+
+int main()
+{
+	int i=0;  //i is just our varibal
+	while(i<10)
+	{
+		cout<<"hi"<<endl;
+		i++;
+	}
+	return 0;
+}
+
+//hi
+//hi
+//hi
+//hi
+//hi
+//hi
+//hi
+//hi
+//hi
+//hi

03_loops/L_02_while loop 2 conditions.cpp

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+
+//author :shreyamalogi
+
+/*
+
+while loop satisfying both thec conditions
+for 10 times with test cases
+
+*/
+
+
+#include<iostream>
+
+using namespace std;
+
+int main()
+{
+	int t;
+	cin>>t;
+	while(t--){
+	
+	int i;
+	cin>>i;
+	while(i<10 && i>5)
+	{
+		cout<<"hi"<<endl;
+		i++;
+	}
+	
+}
+	return 0;
+}
+
+
+//4 test cases
+//2 no output
+//6 6 ki 4 his ostai
+//hi
+//hi
+//hi
+//hi
+//7  7 ki 3 times hi
+//hi
+//hi
+//hi
+//3  3 ki no output cuz it is less rthan 5
+
+