by Dinesh Thakur Category: Function and Pointer

The typedef may be used in declaration of a number of pointers of the same type. It does not change the type, it only creates a synonym, i.e., another name for the same type as illustrated below.

typedef float* FP; // Now FP represents float*

float x,y,z;

FP px =&x, py = &y, pz = &z ; // Use of FP

In the above code px, py, and pz are pointers initialized with addresses of x, y, and z respectively.

Illustrates use of typedef in pointer declaration.

#include <stdio.h>

void main()
   typedef double* Dp;
   double x = 10.5,y = 8.6, z = 12.5;
   Dp px = &x , py = &y, pz = &z;
   printf("x = %.3lf,\t *px =  %.3lf\t px = %p \n", x, *px, px);
   printf("y = %.3lf,\t *py =  %.3lf\t py = %p \n", y, *py, py);
   printf("z = %.3lf,\t *pz =  %.3lf\t pz = %p \n", z, *pz, pz);

The expected output is as given below.

typedef in pointer

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Dinesh ThakurDinesh Thakur holds an B.C.A, MCSE, MCDBA, CCNA, CCNP, A+, SCJP certifications. Dinesh authors the hugely popular blog. Where he writes how-to guides around Computer fundamental , computer software, Computer programming, and web apps. For any type of query or something that you think is missing, please feel free to Contact us.

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