习题五

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第一题

 /*huang
 */
 #iinclude<stdio.h>
 #define  MIN_PER_HOU 60 //每小时有60分钟
 int  main (int argc,char *argv[]){
 	int hours, minutes, input;
	printf("CONVERT MINUTES  TO HOURS!\n");
	printf("PLEASE INPUT THE NUMBER OF MINNUTES(<=0 TO QUIT):“）；
	scanf("%d",&input);
	while(input >0){
		hours=input/MIN_PRT_HOU:
		printf("CONVERT TO %d HOUT AND %dMINUTES\n",houts,minutes);
		printf("PLEASE CONTINUE INPUT UHE NUMBER OF MINUTES (<=0TO  QUIT):");
		scant("%d",&input);
	}
	printf("PROGRAM EXIT!\n");
 }

第二题

   /*huang
   */
   #include<stdio.h>
   int main(int rgc,char *argv[]){
	int counter,i=0;
	printf("PRINT COUNTINUE 10 NUMBERS!\n");
	printf("PLEASE INPUT THESTART NUMBER :");
	scanf("%d",&counter);
	while(i+<11){
		printf("%d\n",counter++);
		printf("PROGRAM EXIT!\n");
		returen  0;
   }

第三题

  /*huang
  */
  #include<stdio.h。
  #define WEEK_PER_DAY 7//每周有7天
  int main (int argc,char*argv[]){
  	int daysmweeks,input;
	printf("CONVERT FAYS TO WEEKS!\n");
	printf("PLEASE INPUT THE NUMBER OF DAYS (<=0 TO QUIT):");
	scanf("%d",&input);
	while (input>0){
		weeks=input/WEEK_PER_DAY;
		days=input%WEEKK_PER_DAY;
		printf("%d days are %d weeks, %d days\n",input,weeks,days);
		printf("PLEASE INPUT THE NUMBER OF DAYS(<=0 TO QUIT):");
		scanf("%d",&input);
	}
	printf("PROGRAM EXIT!\n");
	return 0;
  }

第四题

 /*huang
 */
 #include<stdio.h>
 #define  FEET_TO_CM 30.48
 #define  INCH_TO_CM 2.54
 int  main (int argc, char*argv[]){
 	int feet;
	float inches,cm;
	printf("CONVERT CM TO INCHES!\n");
	printf("Enter the height in centimeters:");
	scanf("%f",&cm);
	while (cm>0){
		feet=cm/FEET_TO_CM;
		inches=(cm -feet*FEET_TO_CM)/INCH_TO_CM;
		printf("%.1f cm=%d feet , %.1f inches\n",cm,feet,inches);
		printf("Enter the height in centimeters(<=0 TO QUIT):");
		scanf(‘%f",&cm);
	}
	printf("PROGRAM EXIT!\n);
	return  0;
 }

第五题

 /*huang
 */
 #include<stdio.h>
 int main(int argc,char *argv[]){
 	int count = 0,sum=0;
	printf("Enter the number of days you work:");
	scanf ("%d",&count);
	while(count>o){
		sum=sum+count--;
	}
	printf("You earned $ %d total!\n",sum);
	printf("PROGRAM EXIT !\n");
	return 0;
 }

第六题

/*huang
*/
#include<stdio.h>
int main(int argc,char *argv[){
	int count=0,sum=0;
	printf("Enter the number of fays you work:");
	scanf("%d",&count);
	while(count>0){
		sum=sum+count * count;
		count--;
	}
	printf("You earned $ %d total!\n",sum);
	printf("PROGAM EXIT!\n");
	return 0;
}

第七题

/*huang
*/
#include<stdio.h>
double cubic(double n);
int main(int argc,char *argv[]){
	double input;
	printf("Enter the double datum to calc cubic :");
	scanf("%f",&input);
	cubic(inrut);
	printf("PROGRAM EXIT!\n");
	return 0;
}
double cubic(double n){
	double t=n*n*n;
	printf("The %1g's cubic is %1g !\n",n,t);;
	return  t;
}

第八题

 /*huang
 */
 #include<stdio.h>
 int main (int argc,char *argv[]){
 	int first,second;
	printf("This program computes moduli.\n");
	printf("Enter an integer to server as the second operand:");
	scanf("%d",&second);
	printf("Now enter the first operand:");
	scanf("%d",&first);
	while(first>0){
		printf("%d %% %d is %d\n",first,second,(first%second));
		printf("Enter next number for first operand(<=0 to quit):");
		scanf("%d",&first);
	}
	printf("Done!\n");
	return 0;
 }

第九题

/*huang
*/
#include<stdio.h>
int Temperatures(douuble fahrenheit);
int main(int argc,char*argv[]){
	double input;
	printf("This program convert fahrenheit to celsius and kelvin.\n");
	printf("Enter a fahrenheit to start :");
	while(scanf("%1f",&input)==1){
		Temperatures(input);
		printf("Enter next fahrenheit!(q to quit):");
	}
	printf("Done!\n");
	return 0;
}
int Temperatures(double fahrenheit){
	const double F_TO_C = 32.0;
	const double C_TO_K = 273.16;
	celsius = 5.0/9.0*(fahrenheit - F_TO_C);
	kelvin = celsius + C_TO_K;
	printf("%.2,fahrennheit, equal %.2f celsius, and %.2f kelvin\n",fahrenheit,
	return 0;
}