Thread: Strings

I am having a problem with my program. Whenever I input a 10 letter word like montgomery its' output is montgomer@ies. The program is about converting the noun that ends with "y" to "ies".

Code:

include <stdio.h>
#include <string.h>
#define STRING_LEN 20
void check_noun(char *dest, const char *source);
int
main(void)
{
char original[STRING_LEN], changed[STRING_LEN];
printf(" Please enter the noun here> ");
scanf("%s", original);
check_noun(changed, original);
printf(" The plural version of noun is: %s\n ", changed);
return(0);
}
void check_noun(char *dest, const char *source)
{
int num, number;
for(num=0; num < strlen(source); num=num+1)
{
if(source[num]=='y')
{
strncpy(dest, source, num);
strcat(dest, "ies");
}
}
}

Here is what happens when I run the program:
Please enter the noun here> montromery
The plural version of noun is: montromer@ies

strcat uses the nul character to align the strings, and since
you haven't copied the nul to the new string in strncpy()
you need to insert your own first, so use

Code:

strncpy(dest, source, num);
dest[num] = '\0';
strcat(dest, "ies");

Originally Posted by muradyan14

The program is about converting the noun that ends with "y" to "ies".

So, why do you check every letter if you only want to change the 'y' at the end of a string?

For example try your program with a word like "physician".

Bye, Andreas