C program does not use strcpy() to copy a string

Comprehensive Collection of C Programming Examples

In this example, you will learn how to copy a string without using the strcpy() function.

To understand this example, you should understand the followingC language programmingTopic:

• C array

• C language string

• C for loop

As you know, the best way to copy a string is to use the strcpy() function. However, in this example, we will manually copy the string without using the strcpy() function.

Do not use strcpy() to copy a string

#include <stdio.h>
int main() {
　　　　char s1[100], s2[100], i;
　　　　printf("Input string s1: ";
　　　　fgets(s1, sizeof(s1), stdin);
　　　　for (i = 0; s1[i] != '\0';　++i) {
　　　　　　　　s2[i] = s1[i];
　　　　}
　　　　s2[i] = '\0';
　　　　printf("String s2: %s", s2);
　　　　return 0;
}

Output Result

Input string s1: Hey fellow programmer.
String s2: Hey fellow programmer.

The above program manually copies the string s1Copy the content to the string s2.

Comprehensive Collection of C Programming Examples