#include <stdio.h>
#include <string.h>
int main() {
char s[] = "abc";
char v[] = "cdeabf";
printf("'%s' %scontém todos os caracteres presentes em '%s'", v
, (strspn(s
, v
) == strlen(s
)) ? "" : "não ", s
); }
//https://pt.stackoverflow.com/q/54324/101
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