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C - strncpy function
Synopsis:
#include <stdio.h>
char *strncpy (char *dest, char *src, int n);
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Description:
The strcpy function copies n characters from src to dest up to and including the terminating null character if length of src is less than n.
Return Value
The strncpy function returns dest.
Example
#include <stdio.h>
int main() {
char input_str[20];
char *output_str;
strncpy(input_str, "Hello", 20);
printf("input_str: %s\n", input_str);
/* Reset string */
memset(input_str, '\0', sizeof( input_str ));
strncpy(input_str, "Hello", 2);
printf("input_str: %s\n", input_str);
/* Reset string */
memset(input_str, '\0', sizeof( input_str ));
output_str = strncpy(input_str, "World", 3);
printf("input_str: %s\n", input_str);
printf("output_str: %s\n", output_str);
return 0;
}
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It will proiduce following result:
input_str: Hello
input_str: He
input_str: Wor
output_str: Wor
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