Whats wrong in this short script

[mani25i]

int = a,b;
a=0;
b=-1;
while {a<24;
do
{
a++;
b++;
cd /data/logs/bulk/logs/smpp/2014/05/$a
grep submit_sm fb3* |grep -v submit_sm_resp |cut -d : -f2,3,4 |sort|uniq -c|sort -nr | grep "$a-05-2014 $b:00" >> /data/logs/bulk/logs/smpp/mani/fb3/$a;
} } ;

[mHealth]

while(a<24) {
//write script commands in a separate file say a.sh
//then call 
system("./a.sh");
}
 

You may not even need C code, can manage with script alone.

[weaknessforcats]

The loop is a do-while and not a while-do.

do
{
  ....
}while (...);