"C' Examples C

Program to swap the two variables values within and without third variables.

Problem Analysis:

The problem is to swap the variables values with and without using third variables having parameters a,b,c,d,e .

The output is to print the variables by swapping.


Input variables              processing variables                        Output variables                           Necessary header file


a(int)                                   c=a                                              a(int)                                                 stdio.h

b(int)                                   a=b                                              b(int)                                                 conio.h

d(int)                                   b=c                                              d(int)

e(int)                                   d=d+e;                                        e(int)

e=d-e;

d=d-e;


 

Algorithms:

1.start

2.Input the variables by the user.

i.e. int a ,b,d,e

3.Swapping the values with and without using the 3rd variables.

such as:    c=a;                 d=d+e;

a=b;                e=d-e;

b=c;                d=d-e;

4.Print the outputs a ,b,d and e ;

5.End

 

Flowcharts:

fig: flowchart to swap the numbers.

 

Codes:

/*program to swap two variables values with and without using third variables*/

#include<stdio.h>

#include<conio.h>

int main()

{

int a,b,c,d,e;

printf(” enter a ,b,d,e:”);

scanf(“%d%d%d%d”,&a,&b,&c,&d:);

printf(“before swapping:%d%d”,a,b);

c=a;

a=b;

b=c;

printf(“after swapping:%d%d”,a,b);

printf(“before swapping:%d%d”,d,e);

d=d+e;

e=d-e;

d=d-e;

printf(“after swapping:%d%d”,d,e);

getch();

return 0;

}

 

Outputs:

(Compiling , Debuggings and Testings)

enter a ,b,d,e : 3  4  6 8

before swapping: 3  4

after swapping   : 4  3

before swapping : 6  8

after swapping    : 8  6

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