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58 lines
1.4 KiB
58 lines
1.4 KiB
#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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int main(void) {
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// print size of char & character literal
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printf("%zu\n", sizeof(char));
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printf("%zu\n", sizeof('a'));
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// when a string is not a constant
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// doesn't work with gcc anymore, also with -Wno-deprecated-writable-strings
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// gives 'Bus error: 10'
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{
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char *tabHeader = "Sound";
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//*tabHeader = 'L';
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printf("%s\n", tabHeader);
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}
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// string initialization
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{
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// array of char
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char header[] = "Media Player";
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printf("%s\n", header);
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header[0] = 'W';
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header[1] = 'u';
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header[2] = 'r';
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header[3] = 's';
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header[4] = 't';
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header[5] = '\0';
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printf("%s\n", header);
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// pointer to char (with memory allocation)
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char *headerPtr = malloc(strlen("Media Player") + 1);
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strcpy(headerPtr, "Media Player");
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printf("%s\n", headerPtr);
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*headerPtr = 'W';
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*(headerPtr + 1) = 'u';
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*(headerPtr + 2) = 'r';
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*(headerPtr + 3) = 's';
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*(headerPtr + 4) = 't';
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*(headerPtr + 5) = '\0';
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printf("%s\n", headerPtr);
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for (size_t j = 0; j < strlen(headerPtr); j++) {
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printf("headerPtr[%zu] Address: %p Value: %c\n", j, &headerPtr[j], headerPtr[j]);
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}
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printf("\n");
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}
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return 0;
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}
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