84 lines
2.0 KiB
C
84 lines
2.0 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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int * int_list_from_str(char * str);
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int int_count_from_str(char * str);
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int main(int argc, char *argv[]) {
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if (argc != 2) {
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printf("Usage: %s <string>\n", argv[0]);
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return -1;
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}
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printf("%d ints\n", int_count_from_str(argv[1]));
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/*int * list = int_list_from_str(argv[1]);
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for (int i=0; i<int_count_from_str(argv[1]); i++) {
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printf("%d ", list[i]);
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}*/
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return 0;
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}
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int * int_list_from_str(char * str) {
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int ico = int_count_from_str(str);
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int * list = malloc(sizeof(int)*ico);
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int len = strlen(str);
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int current_i = 0;
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int is_i = 1;
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int ic = 0;
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for (int i = 0; i < len; i++) {
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if (str[i] == ' ') {
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if ((i+1 < len && str[i+1] != ' ') || (i+1)==len) {
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list[ic] = current_i;
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ic++;
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}
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is_i = 0;
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current_i = 0;
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} else if (isdigit(str[i])) {
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if (is_i) {
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current_i *= 10;
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} else {
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is_i = 1;
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}
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current_i += (str[i] - '0');
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} else if (str[i]=='-' && current_i > 0) {
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current_i *= -1;
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} else {
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return 0;
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}
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}
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return list;
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}
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int int_count_from_str(char * str) {
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int ic = 0;
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int current_i = 0;
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int is_i = 1;
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int len = strlen(str);
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for (int i = 0; i < len; i++) {
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printf("str[%d]: %c\n", i, str[i]);
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if (str[i] == ' ') {
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if ((i+1 < len && str[i+1] != ' ') || (i+1)==len) ic++;
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is_i = 0;
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current_i = 0;
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} else if (isdigit(str[i])) {
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if (is_i) {
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current_i *= 10;
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} else {
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is_i = 1;
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}
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current_i += (str[i] - '0');
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} else if (str[i]=='-' && current_i > 0) {
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current_i *= -1;
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} else {
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return 0;
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}
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}
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return ic;
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}
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