K and R C, Solution to Exercise 5-4:
K and R C Programs Exercises provides the solution to all the exercises in the C Programming Language (2nd Edition)
. You can learn and solve K&R C Programs Exercise.
C Program, that returns 1 if the string t occurs at the end of the string s, and zero otherwise. Read more about C Programming Language .
K and R C Programs Exercises provides the solution to all the exercises in the C Programming Language (2nd Edition)
. You can learn and solve K&R C Programs Exercise.C Program, that returns 1 if the string t occurs at the end of the string s, and zero otherwise. Read more about C Programming Language .
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#include <stdio.h>
//finds the string length, standard "strlen" function
int str_len(char *s)
{
int n;
for(n = 0; *s != ' '; s++)
{
n++;
}
return n;
}
int str_cmp(char *s, char *t)
{
for(;*s == *t; s++, t++)
if(*s == ' ')
return 0;
return *s - *t;
}
int str_end(char *s, char *t)
{
int Result = 0;
int s_length = 0;
int t_length = 0;
/* get the lengths of the strings */
s_length = str_len(s);
t_length = str_len(t);
/* check if the lengths mean that the string t could fit at the string s */
if(t_length <= s_length)
{
/* advance the s pointer to where the string t would have to start in string s */
s += s_length - t_length;
/* and make the compare using strcmp */
if(0 == str_cmp(s, t))
{
Result = 1;
}
}
return Result;
}
int main(void)
{
char Str1[8192] ;
char Str2[8192] ;
char Str3[8192] ;
printf("n Enter the first string: n");
scanf("%s",Str1);
printf("n Enter the second string: n");
scanf("%s",Str2);
printf("n Enter the third string: n");
scanf("%s",Str3);
printf("String one is (%s)n", Str1);
printf("String two is (%s)n", Str2);
printf("String two is (%s)n", Str3);
if(str_end(Str1, Str2))
{
printf("The string (%s) has (%s) at the end.n", Str1, Str2);
}
else
{
printf("The string (%s) doesn't have (%s) at the end.n", Str1, Str2);
}
if(str_end(Str1, Str3))
{
printf("The string (%s) has (%s) at the end.n", Str1, Str3);
}
else
{
printf("The string (%s) doesn't have (%s) at the end.n", Str1, Str3);
}
return 0;
}
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