C language Learning lesson three exercise programming exercises

1, through the experimental method, to observe how the system handles integer overflow, floating point overflow, and floating point overflow situation.

The case of an integer overflow:

#include <stddio.h>int main () {int i=2147483647;printf ("%d%d%d\n", i,i+1,i+2);} The results of the operation are as Follows:

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Explanation: the range of integer i is:

-2147483647-2147483647

So the maximum value plus 1 overflow up and back to the left End.

Floating point Overflow:

Program:

#include <stdio.h>int main () {float toobig=3.4e38*100.0f; printf ("%e\n", toobig);}

Program Results:

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Floating-point overflow condition:

#include <stdio.h>int main () {float toosmall=0.1234e-10;printf ("%e\n", toosmall/10);}

Results:

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2. Enter a asc| | Code value (66) to output the corresponding Character.

#include <stdio.h>int main () {int i=66;  int j=98; printf ("%c%c\n", i,j);}

Results:

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3, programming Alarm sound, and output as Follows:

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The number of/a is the number of alert sounds.

4.

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Overflow.

C language Learning lesson three exercise programming exercises