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Ch4 functions

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Hattori Sidek
Hattori Sidek
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Chapter 4: Functions Introduction to Function
Objectives ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Intro ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Intro ,[object Object],[object Object],[object Object],[object Object],[object Object]
Function Overview ,[object Object],[object Object],[object Object],[object Object],[object Object]
Function Overview ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Library Functions ,[object Object],[object Object],[object Object],[object Object],[object Object]
Library Functions ,[object Object],[object Object],[object Object],[object Object]
Library Functions: Standard Library Header Description <stdio.h> Functions for standard input and output <float.h> Floating point size limits <limits.h> Contains integral size limits of system <stdlib.h> Functions for converting numbers to text and text to numbers, memory allocation, random numbers, other utility functions <math.h> Math library functions <string.h> String processing functions <stddef.h> Common definitions of types used by C
Library Functions: Math.h Functions Function Returns sqrt(x) Square root exp(x) Exponential function log(x) Natural logarithm (base e) log10(x) Logarithm (base 10) fabs(x) Absolute value pow(x,y) X raised to the power of y sin(x) Trignometric sine (x in radians) cos(x) Trignometric cosine (x in radians) tan(x) Trignometric tangent (x in radians) atan(x) Arctangent of x (returned value is in radians)
Using Functions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
User-defined Functions: Function Definition ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
User-defined functions: Function Definition ,[object Object],Return-value-type function-name(parameter-list) { declarations statements } A return value of type void indicates a function does not Return a value.
User-defined Functions: Function Definition ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
User-defined Functions: Function Definition ,[object Object],[object Object],[object Object],[object Object]
User-defined Functions: Function Definition ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
User-defined Functions: Example ,[object Object],#include <stdio.h> int mod(int, int); /* Function Prototype */ main() { printf(&quot;The mod is: %d &quot;, mod(4,5)); } /* Function Definition */ int mod(int x, int y) { return x % y; }
User-defined Functions: Example ,[object Object],#include <stdio.h> int sum(int x, int y) /* Function Definition */ { return x+y; } main() { printf(&quot;The sum is: %d &quot;, sum(4,5)); }
User-defined Functions: Function Prototype ,[object Object],[object Object],[object Object],[object Object],[object Object]
User-defined Functions: Function Prototype ,[object Object],long int sum (int x, int y); Where; x & y - Parameters int - Parameter type sum - Function name long int - Function return type
User-defined Functions: Function Calls ,[object Object],[object Object],[object Object],[object Object],[object Object]
User-defined Functions: Function Calls ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
User-defined Functions: Function Calls ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
User-defined Functions: Function Calls ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
User-defined Functions: Function Calls ,[object Object],[object Object],[object Object],float FuncByValue(float fval) { return fval*fval; }
User-defined Functions: Function Calls ,[object Object],[object Object],[object Object],[object Object],[object Object],void FuncByReference(float *fvalptr) { *fvalptr = *fvalptr * *fvalptr; }
User-defined Functions: Recursion ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
User-defined Functions: Recursion ,[object Object],[object Object],long int factorial (int n) /* calculate the factorial of n */ { if (n <= 1) return(1); else return(n * factorial(n-1) ); }
Additional Info: Header Files ,[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object]
[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
What is the output for the following C program if the entered input is 108? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Contoh ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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Ch4 functions

  • 1. Chapter 4: Functions Introduction to Function
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  • 9. Library Functions: Standard Library Header Description <stdio.h> Functions for standard input and output <float.h> Floating point size limits <limits.h> Contains integral size limits of system <stdlib.h> Functions for converting numbers to text and text to numbers, memory allocation, random numbers, other utility functions <math.h> Math library functions <string.h> String processing functions <stddef.h> Common definitions of types used by C
  • 10. Library Functions: Math.h Functions Function Returns sqrt(x) Square root exp(x) Exponential function log(x) Natural logarithm (base e) log10(x) Logarithm (base 10) fabs(x) Absolute value pow(x,y) X raised to the power of y sin(x) Trignometric sine (x in radians) cos(x) Trignometric cosine (x in radians) tan(x) Trignometric tangent (x in radians) atan(x) Arctangent of x (returned value is in radians)
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