Answer #include<stdio.h>
#define MAX 1000
int main(){
char octalNumber[MAX];
long int i=0;
printf("Enter any octal number: ");
scanf("%s",octalNumber);
printf("Equivalent binary value: ");
while(octalNumber[i]){
switch(octalNumber[i]){
case '0': printf("000"); break;
case '1': printf("001"); break;
case '2': printf("010"); break;
case '3': printf("011"); break;
case '4': printf("100"); break;
case '5': printf("101"); break;
case '6': printf("110"); break;
case '7': printf("111"); break;
default: printf("\nInvalid octal digit %c ",octalNumber[i]); return 0;
}
i++;
}
return 0;
}
Sample output:
Enter any octal number: 123
Equivalent binary value: 001010011