C program to copy one string to another

Suryateja Pericherla 01/23/2025 6:25pm GMT+0530 Categories: Strings. No Comments

In this article we will learn to implement a C program to copy one string to another. A C program is provided below to copy one string to another without using predefined function strcpy.

Program is as follows:

#include<stdio.h>
#include<string.h>
int main()
{
	char str[20];
	printf("Enter a string: ");
	scanf("%s", str);
	char newstr[20];
	int i=0;
	while(i < strlen(str))
	{
		newstr[i] = str[i];
		i++;
	}
	newstr[i] = '\0';
	printf("Copied string is: %s", newstr);
	return 0;
}

Input and output for the above program is as follows:

Enter a string: india
Copied string is: india

Suryateja Pericherla

Suryateja Pericherla, at present is a Research Scholar (full-time Ph.D.) in the Dept. of Computer Science & Systems Engineering at Andhra University, Visakhapatnam. Previously worked as an Associate Professor in the Dept. of CSE at Vishnu Institute of Technology, India.

He has 11+ years of teaching experience and is an individual researcher whose research interests are Cloud Computing, Internet of Things, Computer Security, Network Security and Blockchain.

He is a member of professional societies like IEEE, ACM, CSI and ISCA. He published several research papers which are indexed by SCIE, WoS, Scopus, Springer and others.

C program to copy one string to another

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