3.1.c

#include <stdio.h>

int main(void) {

	int int_max = 2147483647 ;
	printf("%d   %d\n",int_max,int_max+1);

	float float_max = 3.40e38;
	printf("%f   %f\n",float_max,float_max+1);

	float float_min = 3.40e-38;
	printf("%f   %f\n",float_min,float_min-1);


	return 0;
}

3.2.c

#include <stdio.h>

int main(void) {
	
	int ASCII;
	printf("Please enter a ASCII.\n");
	scanf("%d", &ASCII);
	printf("%d ASCII is related to %c",ASCII,ASCII);
	
	return 0;
}

3.3.c

#include <stdio.h>

int main(void) {
	
	printf("\aStartled by the sudden sound, Sally shouted,\n");
	printf("\"By the Great Pumpkin, what was that!\"");
	
	return 0;
}

3.4.c

#include<stdio.h>

int main(void) {
	float num;
	
	printf("Enter a floating-point values: \n");
	scanf("%f", &num);
	printf("fixed-point notation: %f\n", num);
	printf("exponential notation: %e\n", num);
	printf("p notation: %#a", num);
	
	return 0;
}

3.5.c

#include <stdio.h>

int main(void) {
	
	int name;
	
	printf("Please enter your olds.\n");
	scanf("%d", &name);
	printf("You have lived for %f seconds.", name*3.156e7);
	
	return 0;
}

3.6.c

#include <stdio.h>

int main(void) {
	
	int num;
	printf("Please enter the quart of water.\n");
	scanf("%d", &num);
	printf("%d quater of water include %d water molecules." , num, num * 950 / 3.0e-23);
	
	return 0;
}

3.7.c

#include <stdio.h>

int main(void) {
	
	double height;
	printf("Please enter your height.(in inches)\n");
	scanf("%lf", &height);
	printf("Your height in centimenter is %fcm.\n", height * 2.54);
	
	return 0;
}

3.8.c

#include <stdio.h>

int main(void) {
	
	float cup_numbers;
	
	printf("Hello,how many cups dou you want to enter?\n");
	scanf("%f", &cup_numbers);
	printf("In pint is %f.\n", cup_numbers / 2.0);
	printf("In ounces is %f.\n", cup_numbers * 8.0);
	printf("In table_spoons is %f.\n", cup_numbers * 8 * 2);
	printf("In tea_spoons is %f.", cup_numbers * 8 * 2 * 3);
	
	return 0;
}