47 lines
742 B
C
47 lines
742 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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char *interleave(char *str1, size_t len1, char *str2, size_t len2) {
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char *combined = malloc(len1 + len2 + 1);
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if(!combined) {
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return NULL;
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}
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char *idx = combined;
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while(*str1 && *str2) {
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*idx = *str1, *(idx + 1) = *str2;
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idx += 2, str1 += 1, str2 += 1;
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}
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char *rest = str1;
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if(*str2) {
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rest = str2;
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}
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strcat(idx, rest);
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return combined;
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}
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int main(int argc, char **argv) {
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if(argc != 3) {
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return 1;
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}
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size_t len1 = strlen(argv[1]);
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size_t len2 = strlen(argv[2]);
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char *combined = interleave(argv[1], len1, argv[2], len2);
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if(!combined) {
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return 1;
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}
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printf("%s\n", combined);
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free(combined);
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return 0;
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}
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