mirror of https://github.com/TheAlgorithms/C
92 lines
1.7 KiB
C
92 lines
1.7 KiB
C
#include <ctype.h>
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#include <stdio.h>
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#include <string.h>
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char *abbreviate(const char *phrase)
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{
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char str[80];
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strcpy(str, phrase);
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char *p_str = str;
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static char acr[80];
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strcpy(acr, "");
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/* for counting the words */
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int counter = 0;
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/* for position the words */
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int index = 0;
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/* for -loop variable */
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int i = 0;
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/*
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counts the empty-characters.
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for determine the number of words
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*/
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while (p_str && (i < 80))
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{
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if (*p_str == ' ')
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{
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counter++;
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}
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if (i < 80)
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{
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p_str++;
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i++;
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}
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}
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i = 0;
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counter++;
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char **words = (char **)malloc(counter * sizeof(char *));
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/* initalizes words-array with empty strings */
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for (i = 0; i < counter; i++)
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{
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words[i] = (char *)malloc(80 * sizeof(char));
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strcpy(words[i], "");
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}
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/* rewind string */
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p_str = str;
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char *p_start = p_str;
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/* collects each word in array 'words' */
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while (p_str && (i <= 80))
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{
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if (*p_str == ' ')
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{
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*p_str = '\0';
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strncat(words[index], p_start, 80);
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index++;
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p_start = p_str + 1;
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}
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if (i <= 80)
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{
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p_str++;
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i++;
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}
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}
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/* adds the last word */
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*p_str = '\0';
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strncat(words[index], p_start, 80);
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index++;
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/* builds the actual acronym */
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for (i = 0; i < index; i++)
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{
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/* capitalize the first character */
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words[i][0] = toupper(words[i][0]);
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words[i][1] = '\0';
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strcat(acr, words[i]);
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}
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for (i = 0; i < counter; i++) free(words[i]);
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free(words);
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return acr;
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}
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