Math, Operators and Type Conversion
Any individual item or combination of items, like variables, literals, operators, and parentheses, that evaluates to a value.
Expression
The C language will always pair an "else" statement with the last if statement not isolated using braces.
The Dangling Else Problem
"Seeds" the random number generation. Seed determines what random numbers are generated during runtime of the program.
srand()
What is a library and give an example
a library is a collection of pre‑compiled functions and code
#include<stdio.h>, #include<Math.h>
int x = 1/2 * 3 * 5;
x = 0
There is only one case when the outcome is true and that is when both operators are in a true condition.
Used to clamp the range of values to be generated by rand()
Modulo (%)
name 2 functions in the math library
sqrt,pow,fabs,abs
int m = 10;
int n = --m * m--;
m = 8
n = 81
Code equivalent of testing if x is between 30 and 50 (inclusive).
if(x >= 30 && x <= 50)
Name of the macro that defines the biggest value rand() can return
RAND_MAX
convert 55 to binary
110111
Data truncation is a consequence of this idea.
Type Demotion
Use when your conditions involve a single variable being compared to a finite set of constant, discrete values.
switch statement
rand() % 298
what is a constant stored in the math library
M_PI
The only arithmetic operator that doesn't automatically work with floats/doubles
Modulo (%)
int a = 3
switch(a)
{
case 1:
printf("1");
break;
case 3:
printf("2");
default:
printf("default");
break;
case 2:
printf("3");
}
2default
Generates random numbers between -50 and 50.
(rand() % 101) - 50;
convert 1001101 to decimal
77