C Tutorial/printf scanf/scanf format — различия между версиями
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Текущая версия на 10:32, 25 мая 2010
scanf format
#include <stdio.h>
#include <wchar.h>
const size_t SIZE = 20;
int main(void)
{
int value_count = 0;
float fp1 = 0.0;
char word1[SIZE] = " ";
char word2[SIZE] = " ";
int byte_count = 0;
value_count = scanf("%4f %*d %[abcdefghijklmnopqrstuvwxyz] %*1d %[^o]%n",
&fp1, word1, word2, &byte_count);
printf("\nCount of bytes read = %d\n", byte_count);
printf("\nCount of values read = %d\n", value_count);
printf("\nfp1 = %f ", fp1);
printf("\nword1 = %s word2 = %s\n", word1, word2);
return 0;
}1
1
2
Count of bytes read = 0
Count of values read = 1
fp1 = 1.000000
word1 = word2 =
Scanf format: %f %d %d %[abcd] %*1d %s%n
#include <stdio.h>
#include <wchar.h>
const size_t SIZE = 20;
int main(void)
{
int value_count = 0;
float fp1 = 0.0;
int i = 0;
int j = 0;
char word1[SIZE] = " ";
char word2[SIZE] = " ";
int byte_count = 0;
value_count = scanf("%f %d %d %[abcd] %*1d %s%n",
&fp1, &i , &j, word1, word2, &byte_count);
printf("\nCount of bytes read = %d\n", byte_count);
printf("\nCount of values read = %d\n", value_count);
printf("\nfp1 = %f i = %d j = %d", fp1, i, j);
printf("\nword1 = %s word2 = %s\n", word1, word2);
return 0;
}3
3
3
3
Count of bytes read = 0
Count of values read = 3
fp1 = 3.000000 i = 3 j = 3
word1 = word2 =
