C sin() function
C sin() function - Calculate Sine
Syntax:
double sin(double x)
The sin() function is used to calculate the sine of x, with x expressed in radians.
Parameters:
Name | Description | Required /Optional |
---|---|---|
x | Angle in radians. | Required |
Return value from sin()
- This function returns sine of x.
Example: sin() function
The following example shows the usage of sin() function.
#include <math.h>
#include <stdio.h>
int main(void)
{
double x, y;
x = 1;
y = sin(x);
printf("sin( %lf ) = %lf\n", x, y);
x = 0;
y = sin(x);
printf("\nsin( %lf ) = %lf\n", x, y);
}
Output:
sin( 1.000000 ) = 0.841471 sin( 0.000000 ) = 0.000000
C Programming Code Editor:
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C Programming: Tips of the Day
What's the point of const pointers?
const is a tool which you should use in pursuit of a very important C++ concept:
Find bugs at compile-time, rather than run-time, by getting the compiler to enforce what you mean.
Even though it does not change the functionality, adding const generates a compiler error when you're doing things you didn't mean to do. Imagine the following typo:
void foo(int* ptr) { ptr = 0;// oops, I meant *ptr = 0 }
If you use int* const, this would generate a compiler error because you're changing the value to ptr. Adding restrictions via syntax is a good thing in general. Just don't take it too far -- the example you gave is a case where most people don't bother using const.
Ref : https://bit.ly/33Cdn3Q
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