C Programming Code Examples
C > Strings Code Examples
Accept 2 String & check whether all Characters in first String is Present in second String & Print
/* Accept 2 String & check whether all Characters in first String is Present in second String & Print */
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#define CHAR_SIZE 26
void alphacheck(char *, int []);
void create(char *, int[]);
int main()
{
char str1[50], str2[50];
int a1[CHAR_SIZE] = {0}, a2[CHAR_SIZE] = {0}, x;
char str1_alpha[CHAR_SIZE], str2_alpha[CHAR_SIZE];
printf("Enter string1: ");
scanf("%s", str1);
printf("Enter string2: ");
scanf("%s", str2);
alphacheck(str1, a1);
alphacheck(str2, a2);
create(str1_alpha, a1);
create(str2_alpha, a2);
if (strcmp(str1_alpha, str2_alpha) == 0)
{
printf("All characters match in %s and %s.\n", str1, str2);
printf("The characters that match are: ");
for (x = 0; x < strlen(str1_alpha); x++)
{
printf("%c, ", str1_alpha[x]);
}
printf("\n");
}
else
{
printf("All characters do not match in %s and %s.\n", str1, str2);
}
return 0;
}
void alphacheck(char *str, int a[])
{
int x, index;
for (x = 0; x < strlen(str); x++)
{
str[x] = tolower(str[x]);
index = str[x] - 'a';
if (!a[index])
{
a[index] = 1;
}
}
}
void create(char *str, int a[])
{
int x, j = 0;
for (x = 0; x < CHAR_SIZE; x++)
{
if (a[x])
{
str[j++] = x + 'a';
}
}
str[j] = '\0';
}
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