List of programs
- Write a program to print "HELLO C" using function.
- Write a program to calculate sum using function.
- Write a program to calculate square using function.
- Write a program to swap numbers using function.
- Write a program to calculate the ASCII value of an integer.
- Write a program to calculate the product of float and int.
- Write a program to calculate the value of a power b by using function without using pow() function.
- Write a program to calculate the factorial of any number using function.
- Write a program to convert upper character to lower and lower to upper using function without any predefined function.
1. Write a program to print "HELLO C" using function.
Program:
#include <stdio.h>
void main()
{
// Function Prototype Declaration
void message(void);
//function call
message();
getch();
}
void message()
{
printf("Hello C");
}
2. Write a program to calculate sum using function.
Program:
#include <stdio.h>
void main()
{
//function prototype declaration
int sum(int,int);
int a,b,s;
printf("Enter first number:");
scanf("%d",&a);
printf("Enter second number:");
scanf("%d",&b);
// function call
s=sum(a,b);
printf("Sum of two number is:%d",s);
getch();
}
int sum(int x,int y)
{
return(x+y);
}
3. Write a program to calculate square using function.
Program :
#include <stdio.h>
void main()
{
//function prototype declaration
int square(int);
int a,b,sq;
printf("Enter first number:");
scanf("%d",&a);
// function call
sq=square(a);
printf("Square of given number is %d",sq);
getch();
}
int square(int x)
{
int i;
i=x*x;
return(i);
}
4. Write a program to swap numbers using function.
Program:
#include <stdio.h>
void main()
{
//function prototype declaration
void swap(int,int);
int a,b;
//read numbers from user
printf("Enter first number:");
scanf("%d",&a);
printf("Enter second number:");
scanf("%d",&b);
printf("Numbers before swap a=%d & b=%d",a,b);
// function call
sq=swap(a,b);
getch();
}
void swap(int x,int y)
{
int temp;
temp=x;
x=y;
y=temp;
printf("Numbers after swap a=%d & b=%d",x,y);
}
5. Write a program to calculate the ASCII value of an c.
Program:
#include <stdio.h>
int main()
{
char ascii(int);
int a;
char d;
printf("\n Enter one no:");
scanf("%d",&a);
d=ascii(a);
printf("The ascii value of inputed no is %c",d);
getch();
}
char ascii(int y)
{
char r;
r=y;
return r;
}
6. Write a program to calculate the product of float and int.
Program:
#include <stdio.h>
int main()
{
float product(float,int);
float a,d;
int b;
printf("Enter two no:");
scanf("%f%d",&a,&b);
d=product(a,b);
printf("\n%f",d);
getch();
}
float product(float x,int y)
{
float r;
r=x*y;
return r;
}
7. Write a program to calculate the value of a power b by using function without using pow() function.
Program:
#include <stdio.h>
#include <conio.h>
void main()
{
int power(int,int);
int a,b,d;
printf("Enter two numbers:");
scanf("%d%d",&a,&b);
d=power(a,b);
printf("\n%d to the power of %d is %d",a,b,d);
getch();
}
int power(int x,int y)
{
int r=1,i;
for(i=1;i<=y;i++)
{
r=r*x;
}
return r;
}
8. Write a program to calculate the factorial of any number using function.
Program:
#include <stdio.h>
#include <conio.h>
void main()
{
int fact(int);
int n;
printf (" Enter any number :");
scanf ("%d", &n);
printf (" Factorial of %d = %d\n",n,fact(n));
getch();
}
int fact(int n)
{
int fact=1;
for(int i=1;i<=n;i++)
{
fact=fact*i;
}
return fact;
}
9. Write a program to convert upper character to lower and lower to upper using function without any predefined function.
Program:
#include<stdio.h>
#include<conio.h>
void main()
{
int convert(char);
int a;
char ch;
printf("Enter Character:");
scanf("%c",&ch);
a=convert(ch);
printf("%c",a);
getch();
}
int convert(char x)
{
int i,j;
i=x;
if(i>=65 && i<=96)
{
j=i+32;
}
if(i>=97 && i<=122)
{
j=i-32;
}
return j;
}
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