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  1. #include <stdio.h>
  2. #include <string.h>
  3.  
  4. void test(char *str) {
  5. 	int len;
  6. 	float ignore;
  7. 	int ret = sscanf(str, "%f %n", &ignore, &len);
  8. 	printf("'%s'\t\t: %d\n", str, ret && len==strlen(str));
  9. }
  10.  
  11. int main(void) {
  12. 	test("5.5");
  13. 	test("5.5 ");
  14. 	test(" 5.5 ");
  15. 	test("hello");
  16. 	test("123.ok");
  17. 	test("");
  18. 	return 0;
  19. }
  20.  
Success #stdin #stdout 0s 10320KB
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stdin
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Standard input is empty
stdout
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'5.5'		: 1
'5.5 '		: 1
' 5.5 '		: 1
'hello'		: 0
'123.ok'		: 0
''		: 0
https://ideone.com/GSScOz
language:
C99 (gcc 8.3)
created:
6 years ago
visibility:
public

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