typedef for arrays – Computer Sir Ki Class


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Code Learning #CPP#4506    siteicon   siteicon  

typedef for arrays

understanding how typedef includes array size also while defining type

Learning Objectives

  • Use of typedef to define arrays where the size is also stored.

Source Code

TC++ #4506

Source Code

Run Output

Array Sum = 30

Code Understanding

typedef char arr[5];
Here typedef will not only define array of  type char but array size will also be fixed for 5 members.

int main(){

arr a={1,2,3,4,5};
Here we do not need to define array size as it is prebuilt in type arr. If I initialise more than five members compiler will give error.

int sum=0; for(int i=0;i<5;i++) sum+=a[i];
cout<<“Array Sum = “<<sum<<endl;
Code to print array sum.

return 0;}

Common Errors

  • If array size is already stored in typedef then defining it again will not be correct.
    arr a[6]={1,2,3,4,5,6};  //This will return a compilation error

Suggested Filename(s): tdofarr.cpp, typedefofarray.cpp


sunmitra| Created: 27-Aug-2018 | Updated: 27-Aug-2018|

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