What's difference between int and long type ?

Hi

I don't understand difference between int and long type ?

Code:

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#include <stdio.h>      int main() {
  int x = 1;
  long y  = 1;
 


  printf("size of int  = %d bytes\n", sizeof(x));
  printf(" X = %d \n", x);
 
  printf("size of long  = %d bytes\n", sizeof(y));
  printf(" Y = %d \n", y);
 
  return 0;
}

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size of int = 4 bytes
X = 1
size of long = 4 bytes
Y = 1

gcc compiler allocate 4 bytes for both type int and long and they both store decimal number

What's difference between int and long type ?

Their guaranteed minimum ranges are different:
INT_MAX +32767
INT_MIN -32767
LONG_MAX +2147483647
LONG_MIN -2147483647

On some implementations these days, sizeof(long) might be 8 instead of 4. And of course, even if they happen to be identical in range and bytes as given by sizeof on a given implementation, they nonetheless remain different types.

Incidentally, you should be aware that the format specifiers for the type of the result of sizeof and for long aren't %d:

Code:

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printf("size of int  = %zu bytes\n", sizeof(x));
printf(" X = %d \n", x);

printf("size of long  = %zu bytes\n", sizeof(y));
printf(" Y = %ld \n", y);

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