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60 lines
1.1 KiB
C
60 lines
1.1 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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/* Test string. Must NOT have duplicate characters! */
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static char S[] = "Helo wrd!\n";
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static char Found[256];
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int main (void)
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{
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unsigned Len;
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unsigned I;
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char* P;
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/* Print a header */
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printf ("strchr(): ");
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/* Get the length of the string */
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Len = strlen (S);
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/* Search for all characters in the string, including the terminator */
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for (I = 0; I < Len+1; ++I) {
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/* Search for this char */
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P = strchr (S, S[I]);
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/* Check if we found it */
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if (P == 0 || (P - S) != I) {
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printf ("Failed for code 0x%02X, offset %u!\n", S[I], I);
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printf ("P = %04X offset = %04X\n", P, P-S);
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exit (EXIT_FAILURE);
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}
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/* Mark the char as checked */
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Found[S[I]] = 1;
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}
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/* Search for all other characters and make sure they aren't found */
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for (I = 0; I < 256; ++I) {
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if (Found[I] == 0) {
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if (strchr (S, (char)I) != 0) {
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printf ("Failed for code 0x%02X\n", I);
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exit (EXIT_FAILURE);
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}
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}
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}
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/* Test passed */
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printf ("Passed\n");
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return EXIT_SUCCESS;
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}
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