// C program to illustrate __builtin_ctz(x) #include <stdio.h> int main() { int n = 16; printf("Count of zeros from last to first " "occurrence of one is %d", __builtin_ctz(n)); return 0; }
a = 16 Binary form of 16 is 00000000 00000000 00000000 00010000 Output: ctz = 4