Compile and Execute C Online

#include <stdio.h>
char findMSB(int number)
{
    char msb = 0;
    int sizeInBits = 0;
    sizeInBits = sizeof(number)*8;
    
    for(char iii =0;iii<sizeInBits;iii++)
    {
        ((number>>iii)&1)?(msb = iii):NULL; 
    }
    printf("msb is %d\n",msb);
    return msb;
}

char ifAlternate(char msb,int number)
{
    char lsb = 0,isAlternate = 1;
    (number&1)?(lsb = 1):(lsb=0);
    char valueOfBit = 0;
    for(char iii = 0;iii<=msb;iii++)
    {
        
        valueOfBit = (number>>iii)&1;
        printf("\nvalueof bit is %d\n",valueOfBit);
        if((iii%2 == 0)&&(valueOfBit==lsb))
            continue;
        else if((iii%2 != 0)&&(valueOfBit!=lsb))
            continue;
        else 
        {
            isAlternate = 0;
            break;
        }   
    }
    (isAlternate == 1)?printf("\nis alternate\n"):printf("\ni not alternate\n");
    return isAlternate;
}
int main()
{
     int number;
     char msb = 0,isAlternate =0;
     scanf("%d",&number);
     msb = findMSB(number);
     isAlternate = ifAlternate (msb,number); 
    return 0;
}