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week3-1.c
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week3-1.c
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#include <stdio.h>
int main()
{
long long n;
scanf("%lld",&n);
int i,number_of_digits=0;
long long temp=n;
while(temp){
temp=temp/10;
number_of_digits++;
}
int digits[number_of_digits];
temp=n;
for(i=0;i<number_of_digits;i++){
digits[i]=temp%10;
temp=temp/10;
}
for(i=number_of_digits-1;i>=0;i--){
switch(i){
case 5:
if(digits[i]==1){
printf("One hundred");
}
else if(digits[i]==2){
printf("Two hundred");
}
else if(digits[i]==3){
printf("Three hundred");
}
else if(digits[i]==4){
printf("Four hundred");
}
else if(digits[i]==5){
printf("Five hundred");
}
else if(digits[i]==6){
printf("Six hundred");
}
else if(digits[i]==7){
printf("Seven hundred");
}
else if(digits[i]==8){
printf("Eight hundred");
}
else if(digits[i]==9){
printf("Nine hundred");
}
break;
case 4:
if(digits[i]==1){
i--;
if(digits[i]==1){
printf("eleven thousand");
}
else if(digits[i]==2){
printf("twelve thousand");
}
else if(digits[i]==3){
printf("thirteen thousand");
}
else if(digits[i]==4){
printf("fourteen thousand");
}
else if(digits[i]==5){
printf("fifteen thousand");
}
else if(digits[i]==6){
printf("sixteen thousand");
}
else if(digits[i]==7){
printf("seventeen thousand");
}
else if(digits[i]==8){
printf("eighteen thousand");
}
else if(digits[i]==9){
printf("nineteen thousand");
}
}
else if(digits[i]==2){
printf("twenty");
}
else if(digits[i]==3){
printf("thirty");
}
else if(digits[i]==4){
printf("forty");
}
else if(digits[i]==5){
printf("fifty");
}
else if(digits[i]==6){
printf("sixty");
}
else if(digits[i]==7){
printf("seventy");
}
else if(digits[i]==8){
printf("eighty");
}
else if(digits[i]==9){
printf("ninety");
}
break;
case 3:
if(digits[i]==1){
printf("one thousand");
}
else if(digits[i]==2){
printf("two thousand");
}
else if(digits[i]==3){
printf("three thousand");
}
else if(digits[i]==4){
printf("four thousand");
}
else if(digits[i]==5){
printf("five thousand");
}
else if(digits[i]==6){
printf("six thousand");
}
else if(digits[i]==7){
printf("seven thousand");
}
else if(digits[i]==8){
printf("eight thousand");
}
else if(digits[i]==9){
printf("nine thousand");
}
else if(digits[i]==0){
printf("thousand");
}
break;
case 2:
if(digits[i]==1){
printf("One hundred");
}
else if(digits[i]==2){
printf("Two hundred");
}
else if(digits[i]==3){
printf("Three hundred");
}
else if(digits[i]==4){
printf("Four hundred");
}
else if(digits[i]==5){
printf("Five hundred");
}
else if(digits[i]==6){
printf("Six hundred");
}
else if(digits[i]==7){
printf("Seven hundred");
}
else if(digits[i]==8){
printf("Eight hundred");
}
else if(digits[i]==9){
printf("Nine hundred");
}
break;
case 1:
if(digits[i]==1){
i--;
if(digits[i]==1){
printf("eleven");
}
else if(digits[i]==2){
printf("twelve");
}
else if(digits[i]==3){
printf("thirteen");
}
else if(digits[i]==4){
printf("fourteen");
}
else if(digits[i]==5){
printf("fifteen");
}
else if(digits[i]==6){
printf("sixteen");
}
else if(digits[i]==7){
printf("seventeen");
}
else if(digits[i]==8){
printf("eighteen");
}
else if(digits[i]==9){
printf("nineteen");
}
}
else if(digits[i]==2){
printf("twenty");
}
else if(digits[i]==3){
printf("thirty");
}
else if(digits[i]==4){
printf("forty");
}
else if(digits[i]==5){
printf("fifty");
}
else if(digits[i]==6){
printf("sixty");
}
else if(digits[i]==7){
printf("seventy");
}
else if(digits[i]==8){
printf("eighty");
}
else if(digits[i]==9){
printf("ninety");
}
break;
case 0:
if(digits[i]==1){
printf("one");
}
else if(digits[i]==2){
printf("two");
}
else if(digits[i]==3){
printf("three");
}
else if(digits[i]==4){
printf("four");
}
else if(digits[i]==5){
printf("five");
}
else if(digits[i]==6){
printf("six");
}
else if(digits[i]==7){
printf("seven");
}
else if(digits[i]==8){
printf("eight");
}
else if(digits[i]==9){
printf("nine");
}
else if(digits[i]==0){
printf("thousand");
}
}
}
return 0;
}