Code:
void main()
{
FILE *inPtr;
char alpha[] = {'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'};
int numbers[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
int letter[ALPHABET];
int digit[NUM];
int ch, i, x, y, z;
y = 0;
inPtr = fopen("C:\\Temp\\indata.txt", "r");
if(!inPtr)
{
printf("\nError open input file\n");
exit(13);
}
while(1)
{
ch = fgetc(inPtr);
if(ch == EOF)
break;
else if(isalpha(ch))
{
for(i = 0; i < ALPHABET; i++)
{
ch = tolower(ch);
if(ch == alpha[i])
letter[i]++;
}
}
else if(isdigit(ch))
{
for(x = 0; x < NUM; x++)
{
if(ch == numbers[x])
digit[x]++;
}
}
else if(ispunct(ch))
y++;
}
for(z = 0; z < ALPHABET; z++)
{
printf("%c's: %d\n", alpha[z], letter[z]);
}
for(z = 0; z < NUM; z++)
{
printf("\n%d's: %d", numbers[z], digit[z]);
}
printf("\nSpecial Characters found: %d\n", y);
fclose(inPtr);
}