#include<stdio.h> int main() { char num[100]; int x=0; gets(num); while(num[x]!='\0'); { x++; } return 0; }
Standard input is empty
#include<stdio.h> int main() { char num[100]; int x=0; printf("Enter sentence : "); gets(num); while(num[x]!='\0'); { x++; } printf("The character=%d\n",x); return 0; }