63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
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/*
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* C Program to Remove all Characters in Second String which are
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* present in First String
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*/
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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#include <stdlib.h>
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#define CHAR_SIZE 26
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void alphacheck(char *, int []);
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void create(char [], char [], int[]);
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int main()
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{
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char str1[50], str2[50];
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int a1[CHAR_SIZE] = {0};
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char str2_rem[50];
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printf("Enter string1: ");
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scanf("%s", str1);
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printf("Enter string2: ");
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scanf("%s", str2);
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alphacheck(str1, a1);
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create(str2_rem, str2, a1);
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printf("On removing characters from second string we get: %s\n", str2_rem);
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return 0;
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}
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void alphacheck(char *str, int a[])
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{
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int i, index;
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for (i = 0; i < strlen(str); i++)
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{
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str[i] = tolower(str[i]);
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index = str[i] - 'a';
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if (!a[index])
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{
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a[index] = 1;
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}
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}
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printf("\n");
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}
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void create(char str_rem[], char str[], int list[])
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{
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int i, j = 0, index;
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for (i = 0; i < strlen(str); i++)
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{
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index = str[i] - 'a';
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if (!list[index])
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{
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str_rem[j++] = str[i];
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}
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}
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str_rem[j] = '\0';
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}
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/*
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*
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Enter string1: programming
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Enter string2: computer
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On removing characters from second string we get: cute
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*/
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