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C programming function
This document discusses user-defined functions in C programming. It provides examples of functions with and without parameters and return values. It also demonstrates call by value and call by reference methods. The key points covered are: 1) User-defined functions allow programmers to define reusable blocks of code to perform tasks. 2) Functions can receive input from parameters and return outputs through return values. 3) Parameters passed by value are copied into the function, so changes made inside the function do not affect the original variables. 4) Parameters passed by reference allow the function to modify the original variables.
C programming function
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- 3. System Define function #include<stdio.h> #include<conio.h> #include<math.h> void main() { int num; float r; clrscr(); printf(“Enter any non”); scanf(“%d”,&num); r=sqrt(num); printf(“root of %d is %f n”, num,r); getch(); } EXTRA
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- 6. User Define Function #include<stdio.h> Parameter and no return value #include<conio.h> void add(int, int); void main() { int a,b; clrscr(); printf(“Enter two numbern”); scanf(“%d%d”,&a,&b); printf(“Value of A =%dn”,a); printf(“Value of B =%dn”,b); add(a,b); getch(); } no return void add(int x, int y) { with Parameter int z; z=x+y; printf(“Sum of two no = %dn”,z); } EXTRA
- 7. User Define Function #include<stdio.h> Parameter and return value #include<conio.h> int add(int, int); void main() { int a,b,c; clrscr(); printf(“Enter two numbern”); scanf(“%d%d”,&a,&b); printf(“Value of A =%dn”,a); printf(“Value of B =%dn”,b); c=add(a,b); printf(“Sum of two no = %dn”,c); getch(); } with return int add(int x, int y) { with parameter int z; z=x+y; return z; } EXTRA
- 8. User Define Function No #include<stdio.h> Parameter and no return value #include<conio.h> void disp(); void main() { clrscr(); disp(); getch(); } no return void disp() { no parameter int a,b,c; printf(“Enter two numbern”); scanf(“%d%d”,&a,&b); printf(“Value of A =%dn”,a); printf(“Value of B =%dn”,b); c=a+b; printf(“Sum of two no = %dn”,c); getch(); } EXTRA
- 9. User Define Function No Parameter and return value #include<stdio.h> #include<conio.h> int fact(); void main() { clrscr(); printf("Factorial %d",fact()); getch(); } with return int fact() { no parameter int n,f=1; printf(" Enter any numbern"); scanf("%d",&n); while(n>=1) { f=n*f; n--; } return f; } EXTRA
- 10. User Define Function Call by value method #include<stdio.h> #include<conio.h> void disp (int , int); void main() { int a,b; clrscr(); printf(“Enter the Value of a & bn”); scanf(“%d%d”,&a,&b); printf(“Value of a before function %dn”,a); printf(“Value of b before function %dn”,b); disp(a,b); printf(“value of a after function %dn”,a); printf(“Value of b after function %dn”,b); getch(); } void disp(int a, int b) { a=a+10; b=b+10; printf(“Value of a inside function %dn”,a); printf(“value of b inside function %dn”,b); } EXTRA
- 11. User Define Function Call by reference method #include<stdio.h> #include<conio.h> void disp (int &, int&); void main() { int a,b; clrscr(); printf(“Enter the Value of a & bn”); scanf(“%d%d”,&a,&b); printf(“Value of a before function %dn”,a); printf(“Value of b before function %dn”,b); disp(a,b); printf(“value of a after function %dn”,a); printf(“Value of b after function %dn”,b); getch(); } void disp(int &a, int &b) { a=a+10; b=b+10; printf(“Value of a inside function %dn”,a); printf(“value of b inside function %dn”,b); } EXTRA
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- 17. #include<stdio.h> #include<conio.h> inttable(int,int); void main() { int n,y=1,t; clrscr(); printf("Enter any non"); scanf("%d",&n); table(n,y); getch(); } int table(int n, int y) { int t; if(y==11) { return 0; } else { t=n*y; printf("%d*%d=%dn",n,y,t); table(n,y+1); } return t; } EXTRA