Design a function Concatenate two string in c
Concatenating Two Strings in C: A Step-by-Step Guide
To design a function to concatenate two strings in C, we can use the following steps:
- Declare the function prototype with two string parameters and a string return value.
- Within the function body, use the
strlen()function to get the length of the first string. - Allocate a new string of sufficient size to hold the concatenated string.
- Copy the first string to the new string.
- Append the second string to the new string.
- Return the new string.
C function to concatenate two strings:
C Prpogramming
#include <string.h>
char* Concatenate(char* str1, char* str2) {
// Get the length of the first string.
size_t len1 = strlen(str1);
// Allocate a new string of sufficient size to hold the concatenated string.
char* str = malloc(len1 + strlen(str2) + 1);
if (str == NULL) {
return NULL;
}
// Copy the first string to the new string.
strcpy(str, str1);
// Append the second string to the new string.
strcat(str, str2);
// Return the new string.
return str;
}This function can be used to concatenate two strings as follows:
C Programming
char* str1 = "Hello";
char* str2 = "World";
// Concatenate the two strings.
char* str = Concatenate(str1, str2);
// Print the concatenated string.
printf("%s\n", str);Output:
HelloWorld
Further Reading:
Concatenating Two Strings in C: A Step-by-Step Guide
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