while loop in c does not end

Question

When I run this code, it enters an indefinite loop. Where did I go wrong?

#include <stdio.h>
int main()
{
    char x;                
    x=0;
    while(x<=225)
    {
        printf("%c=%d\n",x,x);
        x=x+1;
    }
    return 0;
}

The char is probably signed in your implementation so x has the range -128 to 127. — Weather Vane
– Weather Vane, Commented Jul 20, 2017 at 16:01

Vlad from Moscow · Accepted Answer · 2017-07-20 16:03:28Z

2

If the type char behaves as the type signed char then the valid range of values is [-128, 127]. It is undefined behavior when after increment the result value exceeds 127.

Instead of the type char you can use the type unsigned char.

answered Jul 20, 2017 at 16:03

Vlad from Moscow

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