Programming in Objective-C, Sixth Edition

Integer and Floating-Point Conversions

To effectively develop Objective-C programs, you must understand the rules used for the implicit conversion of floating-point and integer values in Objective-C. Program 4.5 demonstrates some of the simple conversions between numeric data types.

Program 4.5

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// Basic conversions in Objective-C#import <Foundation/Foundation.h>int main (int argc, char * argv[]){   @autoreleasepool {      float  f1 = 123.125, f2;      int    i1, i2 = -150;      i1 = f1;   // floating to integer conversion      NSLog (@"%f assigned to an int produces %i", f1, i1);      f1 = i2;   // integer to floating conversion      NSLog (@"%i assigned to a float produces %f", i2, f1);      f1 = i2 / 100;   // ...