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Jason Aller Floppy Collection
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EXAMPLES
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CONVERT.C
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C/C++ Source or Header
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1988-08-02
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1KB
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45 lines
/*
* C O N V E R T
*
* Show the effects of both implicit and explicit data
* conversions in expressions involving different types.
*/
main()
{
/* Variable declarations and initializations. */
char cv;
int iv1 = 321;
float fv1, fv2;
/*
* Lost precision: Show the effect of storing an
* integer-sized value in a character variable.
*/
printf("CONVERT:\n\n");
cv = iv1;
printf("Integer assigned to character: %d -> %d (%c)\n\n",
iv1, cv, cv);
/*
* Integer arithmetic: Show loss of fractional component
* when numbers are involved in integer-only expressions
* and how to retain the fractional component.
*/
fv1 = iv1 / 50;
printf("Integer arithmetic: %d / 50 = %f\n", iv1, fv1);
fv1 = iv1 / 50.0;
printf(" Real arithmetic: %d / 50.0 = %f\n\n", iv1, fv1);
/*
* Promotion: In the following example, an integer
* is promoted to a float before being added to a
* floating-point variable.
*/
fv1 = 1028.750;
fv2 = fv1 + iv1;
printf("%f + %d equals %f\n", fv1, iv1, fv2);
return (0);
}