C Program to copy one string into another using strcpy() function

                                                

Algorithm:

 

step 1:start

 

step 2:declare a,b as character array

 

step 3:input b 

 

step 4:print "original string",b

 

step 5:perform strcpy() operation

 

step 6:print "copied string",a

 

step 7:stop

 

 Flowchart:

 

 

 

 Code

#include <stdio.h>

int main()

{

    char a[100],b[100];

    printf("Enter a String:");

    gets(b);

    printf("Original String:%s",b);

    strcpy(a,b);

    printf("\nCopied String:%s",a);

    return 0;

}

 

Sample Input and Output

 

Enter a String:Mumbai                                                                                                                

Original String:Mumbai                                                                                                               

Copied String:Mumbai 

 

Explanation of above program 

 

In above Program we are copying one string and storing it into another using strcpy() function

 

strcpy()

the strcpy() function is a standard library function in C/C++.

Parameters associated with strcpy()

strcpy(destination,source)

source:source points to the variable where the string that is to be copied is stored.

destination:It points to the variable in which the string is going to be copied.

The function of strcpy() function is simply copying the content of source  variable into destination variable.

 

 

Let's understand line by line 

 

In the first line of code we have defined header file stdio.h  which is used to import printf() and scanf() function to be used to learn more about header file click here we have already covered basics of C.In the second line of  code we have defined main function with return type int,return type int means function will return integer value we can give any return type like char,float,int etc(other user defined

datatype created using structure and union).In the next line of code we are declaring two array of character,it will act as a string indirectly because string is nothing but an array of character.

 

 

In the next line of code,we are simply printing the message "Enter a string"  after which we are taking input in string format using gets() function 

 

gets()

this function is used to take input in string format  and store the result in the  given variable which is passed in gets() function.The gets() and puts() are declared in the header file stdio.h. Both the functions are involved in the input/output operations of the strings.This function enables the user to enter some character followed by the enter key.

 

 

 

 In the next line of code,we have written ' "Original String:"%s,b' In this Line the first part of line is within double code which will be printed as it is As we have learned that all the statement which are enclosed within double quotes will  we printed as it is,after that we have put %s in printf() function,here %s is format specifier for string variable which we have mentioned immediately after it i.e b variable.So finally were are on the most import line of code i.e where the actual operation of program is getting performed.strcpy() function takes two argument the first is where the copied string should be stored and the second argument from which variable string should be copied.

In our program we have written strcpy(a,b) because we In b variable we have the stored the string that is to copied and a varible is empty string so that the when perform strcpy(a,b) the string stored in b variable will get copied into a variable.In the second last line of code we are simply printing the copied string using printf().In the last line of code we are simply returning 0 to the main function,which tell us that the program is execute successfully and did what it was intended to do.

 

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