//Q81. Count characters in a string without using built-in length functions.
#include <stdio.h>
int main() {
    char str[100];
    int i, count = 0;
    for(i=0; str[i]!='\0'; i++)
        count++;
}
 
				Ly9RODEuIENvdW50IGNoYXJhY3RlcnMgaW4gYSBzdHJpbmcgd2l0aG91dCB1c2luZyBidWlsdC1pbiBsZW5ndGggZnVuY3Rpb25zLgojaW5jbHVkZSA8c3RkaW8uaD4KaW50IG1haW4oKSB7CiAgICBjaGFyIHN0clsxMDBdOwogICAgaW50IGksIGNvdW50ID0gMDsKICAgIGdldHMoc3RyKTsKICAgIGZvcihpPTA7IHN0cltpXSE9J1wwJzsgaSsrKQogICAgICAgIGNvdW50Kys7CiAgICBwcmludGYoIiVkIiwgY291bnQpOwp9Cg==