C scanf example
Example 1
Get decimal from console
#include <stdio.h>
// w w w .j a v a2 s . c o m
int main(void)
{
int i, j;
printf("Enter a decimal number: ");
scanf("%d.%d", &i, &j);
printf("left part: %d, right part: %d", i, j);
return 0;
}
Example 2
o is used for unsigned int expected's value.
#include <stdio.h>
/* ww w. ja va2s. co m*/
main()
{
int i = 0;
int k;
printf("an integer:");
i=scanf("%o",&k);
printf("total values inputted %d\n",i);
printf("The input values %o\n",k);
}
The code above generates the following result.
Example 3
Read string from keyboard
#include <stdio.h>
#include <string.h>
/*w w w . j a v a 2 s. c o m*/
int main(void)
{
char word1[20];
printf("\nType in the first word:\n 1: ");
scanf("%19s", word1);
printf("%19s",word1);
return 0;
}
The code above generates the following result.
Example 4
U is used for unsigned integer in decimal form.
#include <stdio.h>
main()//from w w w .ja va2 s .c om
{
int i = 0;
int k;
printf("integer:");
i=scanf("%u",&k);
printf("total values inputted %d\n",i);
printf("The input values %u\n",k);
}
The code above generates the following result.
Example 5
X is used for unsigned integer in hexadecimal form.
#include <stdio.h>
main()//from ww w .j a v a2 s . c o m
{
int i = 0;
int k;
printf("integer:");
i=scanf("%X",&k);
printf("total values inputted %d\n",i);
printf("The input values %X\n",k);
}
The code above generates the following result.
