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1.

#pragma hdrstop

#include<stdio.h>

#include<conio.h>

//---------------------------------------------------------------------------

 

#pragma argsused

int main(int argc, char* argv[])

{

char slash='/';

short day=15;

short month=9;

int year=2012;

//char* name="Yulia";

/*char name[80]="Yulia";*/

char name[]="Yulia";

int myAge=19;

float myWeightInKg=57.2;

long myAgeInDays=7277;

printf("Anketa\n\n");

printf("Date=%2d%c%2d%c%d\n",day,slash,month,slash,year);

//printf("Date=%2d\/%2d\/%d\n",day,month,year);//

printf("Name=%s\n",name);

printf("My age =%d\n", myAge);

printf("My weight in kilograms=%.1f\n", myWeightInKg);

printf("My age in days=%d\n", myAgeInDays);

getch();

return 0;

}

 

, . char () slash. char . , () PC ASCII. , . , .. , slash /, . . char, ( ) \0. , , . name , Yulia.

printf :

printf("My age =%d\n", myAge);

%d, , printf(), myAge. printf() , , , . , , , . d, , . printf() %c, %f char float . \n, . printf() , . : %.1f. myWeightInKg . () , . , , : %2d.

. , . , /* */. //, . , , name.

2.

#pragma hdrstop

 

//---------------------------------------------------------------------------

 

#pragma argsused

#include <stdio.h>

#include <conio.h>

int main()

{

float a,b,c;

 

printf("Adding two numbers\n\n");

printf("Enter first summand\n");

scanf("%f",&a);

printf("Enter second summand\n");

scanf("%f",&b);

c=a+b;

printf("%.2f+%.2f=%.2f \n",a,b,c);

getch();

 

return 0;

}

scanf(), . , ( ). , , . :

scanf("%f",&a);

&a a scanf().

 

 

3.

#pragma argsused

#include <stdio.h>

#include <conio.h>

int main(int argc, char* argv[])

{

char slash = '/';

short chislo = 1;

short month = 9;

int year =2010;

long population = 10000000L;

float pi = 3.14159;

double velosity =299791336.2;

long double lightYear = 9.5e15;

 

printf("Date = %02d%c%02d%c%d\n",chislo,slash, month, slash, year);

printf("Population of the Belarus = %ld\n",population);

printf("Pi = %f\n",pi);

printf("Velocity of light = %13.2lf meter/sec\n",velosity);

printf("One light year = %.0Lf meter\n",lightYear);

getch();

return 0;

}

 

.

1. 1, ( 1). ( , 2 ). float int. . 3.

2. 2, ( 2). .

3. 1, .

4. * , . , r2 r*r.

 

1. d=a+b-c
2. d=a*b-c
3. d=a-b-c
4. d=(a+b)*c
5. d=(a-b)*c
6. d=a*b+c
7. d=a+b*c
8. d=2a+3b+4c
9. d=5a*b-3c
10. d=6a-2b+3c
11. d= (2a+6b)*c
12. d=4a+3c*b
13. d=2a+b-c

 



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