# C Program to print the two digit number in words

Last updated on July 27, 2020

The following is a C program to print the two digit number in words:

  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 /*********************************************** Program to print the two digit number in words ***********************************************/ #include // include stdio.h library int main(void) { int num1, num2; printf("Enter a two-digit number: "); scanf("%1d%1d", &num1, &num2); printf("You have entered: "); // print word for the first digit switch (num1) { case 1: // special case for numbers between 11-19 switch (num2) { case 0: printf("ten"); return 0; case 1: printf("eleven"); return 0; case 2: printf("twelve"); return 0; case 3: printf("thirteen"); return 0; case 4: printf("fourteen"); return 0; case 5: printf("fifteen"); return 0; case 6: printf("sixteen"); return 0; case 7: printf("seventeen"); return 0; case 8: printf("eigthteen"); return 0; case 9: printf("nineteen"); return 0; } case 2: printf("twenty"); break; case 3: printf("thirty"); break; case 4: printf("forty"); break; case 5: printf("fifty"); break; case 6: printf("sixty"); break; case 7: printf("seventy"); break; case 8: printf("eighty"); break; case 9: printf("ninety"); break; } // print word for the second digit switch (num2) { case 1: printf("-one"); break; case 2: printf("-two"); break; case 3: printf("-three"); break; case 4: printf("-four"); break; case 5: printf("-five"); break; case 6: printf("-six"); break; case 7: printf("-seven"); break; case 8: printf("-eight"); break; case 9: printf("-nine"); break; } return 0; } 

Expected Output:

1st run:

 1 2 Enter a two-digit number: 19 You have entered: nineteen 

2nd run:

 1 2 Enter a two-digit number: 95 You have entered: ninety-five 

## How it works #

The program consists of two outer switch statements. The first one is defined in lines 17-78 and the second one is defined in lines 81-110. The first switch statement prints the word for the first digit and the second switch statement print the word for the second digit. Numbers from 11 to 19, require special treatment and are handled by the nested switch statement defined in lines 21-53.