The following code works fine on CodeBlocks compiler but on MPLAB C18 compiler I don't get the same results. I am using PIC18 microcontroller.
Code
int d[6];
int all;
d[0] = 6;
d[1] = 4;
d[2] = 8;
d[3] = 0;
d[4] = 0;
all = 10000*d[0] + 1000*d[1] + 100*d[2] + 10*d[3] + d[4];
printf("%d", all);
Output on CodeBlocks: 64800
Output on MPLAB: -816
What is exactly the problem? Shouldn't this code work fine? Thanks!
Objects that have the type int aren't guaranteed to be able to store values beyond -32767 or 32767. Your Code::Blocks implementation happens to extend this range, but your MPLAB C18 implementation (which isn't really a valid C implementation, by the way) doesn't. What you're seeing in your MPLAB implementation is undefined behaviour due to signed integer overflow. Use an unsigned type, and/or a wider type, such as long or long long. Don't forget to modify your printf format specifier accordingly. %u for unsigned int, %ld for long, %lu for unsigned long, %lld for long long, etc...
according to this link , Your MCU is 8-bits system. so the length of the integer of your system is 16 bits. when you simulate your code with CodeBlocks, you are running your code with a 32-bits system ( or 64-bits system ) and the size of integer is 32 bits. so you will not get the same results. because in your MPLAP system you are overflowing the integer size
