Question

How to use scanf() function to read formatted data from stdin (input data) in C

Answer 1

#include <stdio.h>
   
int main(void)
{
	char str [64];
	printf("Enter a string: ");
	scanf("%63s",str);  
	puts(str);
	
	int i;
	printf("Enter an integer: ");
	scanf("%d",&i);
	printf("i = %d\n", i);
	
	printf("Enter a hexadecimal number: ");
	scanf("%x", &i);
	printf("i = %#x (%d)\n",i, i);
	
	float f;
	printf("Enter a floating point numbe: ");
	scanf("%f",&f);
	printf("f = %f\n", f);
	
	fflush(stdin);
	
	char ch;
	printf("Enter a character: ");
	scanf("%c",&ch);
	printf("ch = %c\n", ch);
	
	long l;
	printf("Enter a long number: ");
	scanf("%ld",&l);
	printf("l = %ld\n", l);
	
	double d;
	printf("Enter a double: ");
	scanf("%lf",&d);
	printf("d = %lf\n", d);
	
	long long ll;
	printf("Enter a long long number: ");
	scanf("%I64d",&ll);
	printf("ll = %I64d\n", ll);
	
    return 0;
}
  
/*
run:
  
Enter a string: abcd
abcd
Enter an integer: 100
i = 100
Enter a hexadecimal number: ff
i = 0xff (255)
Enter a floating point numbe: 3.14
f = 3.140000
Enter a character: a
ch = a
Enter a long number: 7364321
l = 7364321
Enter a double: 3432.7363
d = 3432.736300
Enter a long long number: 1988737732
ll = 1988737732

*/

 

70+ SQL courses for beginners and professionals