Function recap

Function recap

• 1.
  Function Recap
• 2.
  What is function?Afunction is a section of a program that performs a specific task .Solving a problem using different functions makes programming much simpler with fewer defects .It’s a solution for a big project that split into small sub project.
• 3.
  Common Type (FUNCTION)Voidfunction Without argumentVoid unction With Input argumentFunction with input argument and single result
• 4.
  Void function withoutargument syntax: void functionname(void)Example:display()draw_circle()draw_triangle()The nearest explantion is printf()
• 5.
  Void function withoutargumentvoid draw_triangle(void){introw,space,star;for(row=1;row<=9;row++){ for(space=8;space>=row;space--) {printf("%c",288); }; for (star=1;star<row;star++) {printf("* "); } printf("\n");} }
• 6.
  Why void? (mostcommon seen in function without argument)Void is use when the function does not return any valueMore explanation:The subfunction is called draw_triangle()from the main function but the function prototype is written as void draw_triangle(void)
• 7.
  Void function withinput argumentsyntax:functiontypefunctionname(input)Example:double box(123.45)circumference(5.0)calculate(inum1)
• 8.
  Void function withinput argumentvoid box(double num){printf("***********\n");printf("* *\n");printf("* *\n");printf("* %7.2f *\n",num);printf("* *\n");printf("* *\n");printf("***********");}
• 9.
  #include<stdio.h>#include<conio.h>void box(double num){printf("***********\n");printf("* *\n");printf("* *\n");printf("* %7.2f *\n",num);printf("* *\n");printf("* *\n");printf("***********");}int main(){ box(123.45);getch();return 0; }
• 10.
  VOID>> and whatis the different between both function shownvoid box(double num)void draw_triangle(void)
• 11.
  Function with inputargument and single resultsyntax: functiontypefunctinname(input argument)Example:double circumferencecal(intrads);
• 12.
  Function with inputargument and single result#include<stdio.h>#include<conio.h>double circumferencecal(intrads);intmain(){intrads=5; double circum; circum=circumferencecal(rads);printf("Ukurlilitbagibulatanbagiber-radius-kan %d adalah %.4lf",rads,circum); getch(); return 0; }double circumferencecal(intrads){ double x; float pi=3.1415; x=2*pi*rads; return(x); }
• 13.
  Returning valuesThe resultof the function can be given back to the calling functions
• 14.
  Return statement isused to return a value to the calling function
• 15.
  Syntax:return (expression) ;Example:return(iNumber* iNumber); return 0; return (3); return; return (10 * i);
• 16.
  Function with multipleargumentsSyntax: functionname(argument1,argument2)Example:circumferencecal(radian,PI);
• 17.
  #include<stdio.h>#include<conio.h>double circumferencecal(intrads,double PI);intmain(){intrads=5; double circum,PI=3.1415; circum=circumferencecal(rads,PI);printf("Ukurlilitbagibulatanbagiber-radius-kan %d adalah %.4lf",rads,circum);getch(); return 0; } double circumferencecal(intrads,double PI){ double x; x=2*PI*rads; return(x); }
• 18.
  Chotto complicated example#include<stdio.h>#include<conio.h>#include<math.h>double circumferencecal(intrads,double PI){ double x; x=2*PI*rads; return(x); } double areacal(intrads,double PI){ double y; y=PI*pow(rads,2); return(y); }int main(){intrads=5; double area,circum,PI=3.1415; circum=circumferencecal(rads,PI); area=areacal(rads,PI); printf("Ukurlilitbagibulatanbagiber-radius-kan %d adalah: %.4lf\nManakalaluasnya pula: %.4lf",rads,circum,area);getch(); return 0; }
• 19.
  Do and Don’tin Function
• 20.
  GOTO
• 21.
  GO TOIs afunction in programming c that allows you to jump according to designation labelsSyntax:gotolabel;Just simply means to redirect you to the label located in the codinglabel: Just simply means to redirect you to the label
• 22.
  Example