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- #include "stdio.h"
- #include "stdlib.h"
- #include "string.h"
- char* string();
- int main() {
- printf("%s", string());
- return 0;
- }
- char* string() {
- char input[128];
- printf("enter a word: ");
- scanf(input, "%s");
- int counter = 0;
- char temp[128];
- int i = 0;
- while (i < input[i]) {
- if ('a' <= input[i] && input[i] <= 'z') {
- temp[counter] = input[i];
- counter++;
- }
- else if ('A' <= input[i] && input[i] <= 'Z') {
- temp[counter] = input[i]+32;
- counter++;
- }
- else if (input[i] == '.' || input[i] == ',' || input[i] == '?' || input[i] == '!') {
- temp[counter] = input[i];
- counter++;
- }
- i++;
- }
- char* output = (char*)malloc(counter * sizeof(char));
- i = 0;
- while (i < counter) {
- *(output + i) = temp[i];
- i++;
- }
- *(output + counter) = '\0';
- return output;
- }
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