blob: f793a6592172bf5f663619006c94a369dbf4f8b4 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
|
#include<iostream>
using namespace std;
int main()
{
//The reason why operator = returns a value!
int a, b, c, d, e, f;
a = b = c = d = e = f = 5;
//Types
int t1 = 4;
double t2 = 4.5;
char t3 = 'v';
bool t4 = true;
//Operators
//Arithmetic operators
int num1 = 5;
int num2 = 2;
int result = a + b; //7
result = a - b; //3
result = a * b; //10
result = a / b; // 2 (not 2.5) (both are ints)
result = a%b; //1 5:2 = 2 (rem :1)
double num2Copy = 2;
double resultCopy = num1 / num2Copy; //2.5 (one of the variables is a double)
int A = 5;
int B = 2;
cout << (A++ - B) << endl;// 3 (but A becomes 6)
A = 5;//let's make it 5 again
cout << (++A - B) << endl;//4 (A becomes 6)
// Comparison operators
int N1 = 5;
int N2 = 6;
cout << (N1 > N2)<<endl; // 0(false);
//or we can do this:
bool cond = N1 > N2;
cout << cond;
//Other comparison operators : ==, !=, >, <, >=,<=
//Logical operators
bool var1 = false;
bool var2 = true;
bool t1 = var1 && var2; //false;
bool t2 = var1 || var2; //true
bool t3 = var1 ^ var2; //true
//Type casting
int a1 = 97;
double b1 = a1;
char c1 = a1;
bool d1 = a1;
cout << a1 << endl; //97
cout << b1 << endl; //97.0
cout << c1 << endl; //a
cout << d1 << endl; //1
double b2 = 65.5;
int a2 = b2;
char c2 = b2;
bool d2 = b2;
cout << b2 << endl; //65.5
cout << a2 << endl; //65
cout << c2 << endl; //A
cout << d2 << endl; //1
char c3 = 'a';
double b3 = c3;
int a3 = c3;
bool d3 = c3;
cout << c3 << endl; //a
cout << b3 << endl; //97
cout << a3 << endl; //97
cout << d3 << endl; //1
bool d4 = true;
int a4 = d4;
double b4 = d4;
char c4 = d4;
cout << c4 << endl; // ??
cout << b4 << endl; // 1
cout << a4 << endl; // 1
cout << d4 << endl; // 1
int grade = 5;
bool isValid = grade >= 2 && grade <= 6;
bool isValid2 = grade == 2 || grade == 3 || grade == 4 || grade == 5||grade == 6;
bool isNotValid = !isValid;
bool isNotValid2 = grade < 2 || grade>6;
}
|
