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  1. #define _POSIX_C_SOURCE 200809L
  2. #include <stdio.h>
  3. #include <stdlib.h>
  4.  
  5. int main()
  6. {
  7. 	enum{MAXSTRLEN=50000};
  8.  
  9. 	FILE *f = popen("uname -a","r");
  10. 	if(!f)
  11. 		return 1;
  12. 	char *string = calloc(MAXSTRLEN+1,1);	
  13. 	size_t n=fread(string,1,MAXSTRLEN,f);
  14. 	if(!ferror(f))
  15. 		printf("%zu Zeichen gelesen: %s",n,string);
  16. 	fclose(f);
  17. 	free(string);
  18. 	return 0;
  19. }
  20.  
Success #stdin #stdout 0s 2288KB
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stdin
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Standard input is empty
stdout
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72 Zeichen gelesen: Linux checker 2.6.34 #6 SMP Fri Jan 21 15:21:52 CET 2011 i686 GNU/Linux
https://ideone.com/x5Cg6m
language:
C99 (gcc 8.3)
created:
7 years ago
visibility:
public

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