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  1. #define _POSIX_C_SOURCE 200809L
  2. #include <stdio.h>
  3. #include <stdint.h>
  4. #include <inttypes.h>
  5.  
  6. void leftshift(unsigned char *str,int nshiftleft, uint64_t *value)
  7. {
  8.     uint64_t x = str[0];
  9.     x = x << nshiftleft;
  10.     *value = x;
  11. }
  12.  
  13. int main()
  14. {
  15.     unsigned char s[] = { 'A', 0 };
  16.     uint64_t result;
  17.  
  18.     leftshift(s, 56, &result);
  19.     printf("%" PRIx64 "\n", result);
  20. }
Success #stdin #stdout 0s 5292KB
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stdin
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Standard input is empty
stdout
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4100000000000000
https://ideone.com/cOmOYZ
language:
C (gcc 8.3)
created:
5 years ago
visibility:
public

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