88 lines
1.7 KiB
C
88 lines
1.7 KiB
C
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/*
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============================================================================
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Name : test.c
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Author : Denis
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Version :
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Copyright : Your copyright notice
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Description : Hello World in C, Ansi-style
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============================================================================
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*/
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#include <stdio.h>
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#include <stdlib.h>
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int len(char const * string) {
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int i = 0;
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while(*string) {
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i++;
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string++;
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}
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return i;
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}
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void swap(char * a, char * b) {
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int temp = *a;
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*a = *b;
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*b = temp;
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}
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char const *find_char( char const *source, char const *chars ) {
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while (*chars) {
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for (char const * i = source; *i; ++i) {
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if ( *chars == *i) {
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return i;
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}
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}
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++chars;
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}
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return NULL;
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}
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int del_substr( char *str, char const *substr ) {
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int is_in_string = 0;
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int substr_len = len(substr);
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int length = 0;
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int index = 0;
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for (int i = 0; str[i]; ++i) {
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length = 0;
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while ( str[i + length] == substr[length] ) {
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++length;
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if( !substr[length] ) {
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index = i;
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is_in_string = 1;
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goto exit_loop;
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}
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}
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}
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exit_loop:
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if ( is_in_string ) {
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int counter;
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for (counter = 0; str[index + length + counter]; ++counter) {
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str[index + counter] = str[index + length + counter];
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}
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str[index + counter] = '\0';
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}
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return is_in_string;
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}
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void reverse_string(char * string) {
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int size = len(string) - 1;
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for (int i = 0; i < size / 2; i++) {
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swap(string + i, string + size - i);
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}
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}
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int main(void) {
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char ana[] = "Ana areare mere.";
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//reverse_string(ana);
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printf("%s", ana);
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printf("\n");
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//printf("%s", find_char(ana, "era") );
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printf("\n");
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int x = del_substr(ana, "are");
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printf(" %d %s", x, ana);
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return EXIT_SUCCESS;
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}
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