в 14:20, 25 мая 2010

2010-05-25T14:20:56Z

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==demonstrate the use of variables==

<source lang="cpp">
int main()
{
int variable;
int variable_2;
int variable_3;
variable = 3 * 5;
variable_2 = 2 * variable;
variable_3 = 3 * variable;
return (0);
}

</source>

==Finding the size of a type==

<source lang="cpp">
/* Finding the size of a type */
#include <stdio.h>
void main()
{
printf("\n char occupy %d bytes", sizeof(char));

printf("\n short occupy %d bytes", sizeof(short));

printf("\n int occupy %d bytes", sizeof(int));

printf("\n long occupy %d bytes", sizeof(long));

printf("\n float occupy %d bytes", sizeof(float));

printf("\n double occupy %d bytes", sizeof(double));

printf("\n long double occupy %d bytes", sizeof(long double));
}

</source>

==For and scanf==

<source lang="cpp">
#include <stdio.h>
void main()
{
int number = 0;
int count = 10; /* Number of values to be read */
long sum = 0L;
float average = 0.0f;
int i = 0;
/* Enter in the ten numbers to be averaged */
for(i = 1; i <= count; i ++)
{
printf("Enter grade: ");
scanf("%d", &number); /* Read a number */
sum += number; /* Add it to sum */
}
average = (float)sum/count; /* Calculate the average */
printf("Average of the ten numbers entered is: %f", average);
}

</source>

==the variable limits==

<source lang="cpp">
/*Finding the variable limits */
#include <stdio.h>
#include < limits.h > /* For limits on integer types */
#include <float.h> /* For limits on floating-point types */
void main()
{
printf("char store values from %d to %d", CHAR_MIN, CHAR_MAX);

printf("\n unsigned char store values from 0 to %u", UCHAR_MAX);

printf("\n short store values from %d to %d", SHRT_MIN, SHRT_MAX);

printf("\n unsigned short store values from 0 to %u", USHRT_MAX);

printf("\n int store values from %d to %d", INT_MIN, INT_MAX);

printf("\n unsigned int store values from 0 to %u", UINT_MAX);

printf("\n long store values from %d to %d", LONG_MIN, LONG_MAX);

printf("\n unsigned long store values from 0 to %u", ULONG_MAX);
printf("\n\n smallest non-zero value of type float is %.3e", FLT_MIN);

printf("\nThe size of the largest value of type float is %.3e", FLT_MAX);

printf("\nThe size of the smallest non-zero value of type double is %.3e",
DBL_MIN);
printf("\nThe size of the largest value of type double is %.3e", DBL_MAX);

printf("\nThe size of the smallest non-zero value of type long double is %.3e",
DBL_MIN);
printf("\nThe size of the largest value of type long double is %.3e\n",
DBL_MAX);
}

</source>

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