47 lines
1020 B
C
47 lines
1020 B
C
#include <stdbool.h>
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static unsigned int random_seed = 53455346;
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int isupper(int c) { return (c >= 65 && c <= 90); }
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int islower(int c) { return (c >= 97 && c <= 122); }
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int toupper(int c) {
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if (!islower(c)) {
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return c;
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}
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return c - 32;
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}
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int tolower(int c) {
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if (!isupper(c)) {
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return c;
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}
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return c + 32;
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}
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int isdigit(int c) { return (c >= 48 && c <= 57); }
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int isalpha(int c) { return (c >= 65 && c <= 90) || (c >= 97 && c <= 122); }
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int isalnum(int c) { return isalpha(c) | isdigit(c); }
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int iscntrl(int c) { return (c <= 31) || (c == 127); }
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int isprint(int c) { return (c >= 32 && c <= 126) || (c >= 128 && c <= 254); }
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int isgraph(int c) { return isprint(c) && c != 32; }
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int ispunct(int c) { return isgraph(c) && !isalnum(c); }
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int isspace(int c) {
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return (c == ' ') || (c == '\t') || (c == '\n') || (c == '\v') ||
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(c == '\f') || (c == '\r');
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}
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int isxdigit(int c) {
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return isdigit(c) || (c >= 65 && c <= 70) || (c >= 97 && c <= 102);
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}
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