Question

How to use signed fixed-width integer type in C

Answer 1

#include <stdio.h>
#include <inttypes.h>
 
int main(void)
{
    int8_t i8 = 127;
    int16_t i16 = 16000;
    int32_t i32 = 320000;
    int64_t i64 = 6400000;
     
    printf("%d\n", i8);
    printf("%d\n", i16);
    printf("%" PRId32 "\n", i32);
    printf("%" PRId64 "\n", i64);
}
 
 
 
/*
run:
 
127
16000
320000
6400000
 
*/

 

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Answer 2

#include <stdio.h>
#include <inttypes.h>

int main(void)
{
    int_fast8_t i8 = 127;
    int_fast16_t i16 = 16000;
    int_fast32_t i32 = 320000;
    int_fast64_t i64 = 6400000;
    
    printf("%d\n", i8);
    printf("%ld\n", i16);
    printf("%ld\n", i32);
    printf("%" PRId64 "\n", i64);
}





/*
run:

127
16000
320000
6400000

*/

 

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