41 lines
797 B
C
41 lines
797 B
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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int numberOfBytesInChar(unsigned char val);
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int utf8strlen(char *s);
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int main(void){
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char s[] = "Hello world";
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char s2[] = "Привет Мир";
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printf("strlen(s) = %llu\n",strlen(s));
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printf("strlen(s2) = %llu\n",strlen(s2));
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printf("utf8strlen(s) = %d\n",utf8strlen(s));
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printf("utf8strlen(s2) = %d\n",utf8strlen(s2));
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return 0;
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}
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int numberOfBytesInChar(unsigned char val) {
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if (val < 0x80)
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return 1;
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else if (val < 0xE0)
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return 2;
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else if (val < 0xF0)
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return 3;
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else
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return 4;
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}
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int utf8strlen(char *s)
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{
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char *tmp = s;
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int len = 0;
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while( *tmp )
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{
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tmp += numberOfBytesInChar(*tmp);
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len++;
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}
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return len;
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}
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