120 lines
3.1 KiB
C
120 lines
3.1 KiB
C
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#include <stdio.h>
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int string_length(char str[]) {
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int length = 0;
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while (str[length] != '\0') {
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length++;
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}
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return length;
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}
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void string_concatenate(char str1[], char str2[], char result[]) {
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int i = 0, j = 0;
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while (str1[i] != '\0') {
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result[j++] = str1[i++];
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}
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i = 0;
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while (str2[i] != '\0') {
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result[j++] = str2[i++];
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}
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result[j] = '\0';
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}
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int string_compare(char str1[], char str2[]) {
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int i = 0;
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while (str1[i] != '\0' && str2[i] != '\0') {
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if (str1[i] != str2[i]) {
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return (str1[i] < str2[i]) ? -1 : 1;
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}
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i++;
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}
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if (str1[i] == '\0' && str2[i] == '\0') {
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return 0;
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} else if (str1[i] == '\0') {
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return -1;
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} else {
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return 1;
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}
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}
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void string_insert(char str[], char substr[], int pos, char result[]) {
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int i = 0, j = 0, k = 0;
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int str_length = string_length(str);
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int substr_length = string_length(substr);
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while (i < pos && i < str_length) {
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result[j++] = str[i++];
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}
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while (substr[k] != '\0') {
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result[j++] = substr[k++];
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}
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while (i < str_length) {
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result[j++] = str[i++];
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}
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result[j] = '\0';
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}
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void string_delete(char str[], int pos, int length, char result[]) {
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int i = 0, j = 0;
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int str_length = string_length(str);
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while (i < pos && i < str_length) {
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result[j++] = str[i++];
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}
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i += length;
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while (i < str_length) {
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result[j++] = str[i++];
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}
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result[j] = '\0';
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}
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int main() {
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char str1[100], str2[100], result[200];
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int choice, pos, length;
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printf("Enter the first string: ");
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scanf("%99s", str1);
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printf("Enter the second string: ");
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scanf("%99s", str2);
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printf("\nChoose an operation:\n");
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printf("1. Length of the first string\n");
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printf("2. Concatenate strings\n");
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printf("3. Compare strings\n");
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printf("4. Insert second string into first string at position\n");
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printf("5. Delete substring from first string\n");
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printf("Enter your choice: ");
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scanf("%d", &choice);
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switch (choice) {
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case 1:
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printf("Length of the first string: %d\n", string_length(str1));
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break;
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case 2:
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string_concatenate(str1, str2, result);
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printf("Concatenated string: %s\n", result);
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break;
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case 3:
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printf("String comparison result: %d\n", string_compare(str1, str2));
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break;
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case 4:
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printf("Enter position to insert the second string: ");
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scanf("%d", &pos);
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string_insert(str1, str2, pos, result);
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printf("String after insertion: %s\n", result);
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break;
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case 5:
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printf("Enter position to start deletion: ");
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scanf("%d", &pos);
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printf("Enter length of substring to delete: ");
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scanf("%d", &length);
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string_delete(str1, pos, length, result);
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printf("String after deletion: %s\n", result);
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break;
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default:
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printf("Invalid choice.\n");
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}
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return 0;
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}
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