kit

kit
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15_ctype.c (449B)

      1 /* ctype.h classifiers + tolower/toupper. */
      2 
      3 #include <ctype.h>
      4 #include <stdio.h>
      5 
      6 int main(void) {
      7   if (!isdigit('7') || isdigit('a')) return 1;
      8   if (!isalpha('Q') || isalpha('5')) return 2;
      9   if (!isspace(' ') || isspace('x')) return 3;
     10   if (!isupper('Z') || isupper('z')) return 4;
     11   if (!islower('z') || islower('Z')) return 5;
     12   if (tolower('Z') != 'z') return 6;
     13   if (toupper('z') != 'Z') return 7;
     14   printf("ctype ok\n");
     15   return 0;
     16 }