Difference between uint32_t vs unsigned int

Difference between uint32_t vs unsigned int

• uint32_t is defined in stdint.h header file, so we have to include this header file if we want to use uint32_t
• It is guaranteed to be a 32-bit unsigned integer
• unsigned int
•  Like int, unsigned int typically is an integer that is fast to manipulate for the current architecture
• so it's to be used when a "normal", fast integer is required.
•  For example, on a 16 bit-processor unsigned int will typically be 16 bits wide, while uint32_t will have to be 32 bits wide.

Program:

/* Difference between uint32_t vs unsigned int by Velraj.K
 * Check : http://velrajcoding.blogspot.in
 */


#include <stdio.h>
#include <stdint.h>  /* For uint32_t */

int main()
{

        /* It is guaranteed to be a 32-bit unsigned integer */
        uint32_t int32_val = 0;
        /* Like int, unsigned int typically is an integer that is fast to manipulate for the current architecture.
         * so it's to be used when a "normal", fast integer is required.
         * For example, on a 16 bit-processor unsigned int will typically be 16 bits wide, while uint32_t
         * will have to be 32 bits wide.
         */
        unsigned int uint_val = 0;

        printf("Vel value int32_val:size <%u:%zu> uint_val:size <%u:%zu> \n", int32_val, sizeof(int32_val), uint_val, sizeof(uint_val));

        return 0;
}

Output:

velraj@velraj-H310M-H:~/velraj/cLang$ ./a.out
Vel value int32_val:size <0:4> uint_val:size <0:4>