C Exercises: Copy One string to another
C Recursion : Exercise-19 with Solution
Write a program in C to copy One string to another using recursion.
Pictorial Presentation:
Sample Solution:
C Code:
#include <stdio.h>
void copyString(char [], char [], int);
int main()
{
char stng1[20], stng2[20];
printf("\n\n Recursion : Copy One string to another :\n");
printf("---------------------------------------------\n");
printf(" Input the string to copy : ");
scanf("%s", stng1);
copyString(stng1, stng2, 0);
printf("\n The string successfully copied.\n\n");
printf(" The first string is : %s\n", stng1);
printf(" The copied string is : %s\n\n", stng2);
return 0;
}
void copyString(char stng1[], char stng2[], int ctr)
{
stng2[ctr] = stng1[ctr];
if (stng1[ctr] == '\0')
return;
copyString(stng1, stng2, ctr + 1);
}
Sample Output:
Recursion : Copy One string to another : --------------------------------------------- Input the string to copy : w3resource The string successfully copied. The first string is : w3resource The copied string is : w3resource
Flowchart:
C Programming Code Editor:
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C Programming: Tips of the Day
Static variable inside of a function in C
The scope of variable is where the variable name can be seen. Here, x is visible only inside function foo().
The lifetime of a variable is the period over which it exists. If x were defined without the keyword static, the lifetime would be from the entry into foo() to the return from foo(); so it would be re-initialized to 5 on every call.
The keyword static acts to extend the lifetime of a variable to the lifetime of the programme; e.g. initialization occurs once and once only and then the variable retains its value - whatever it has come to be - over all future calls to foo().
Ref : https://bit.ly/3fOq7XP
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