Question

Write a C program named as listLetterFreq.c that lists the frequency of the letters from the input via ignoring the case sensitivity. For example, sample outputs could be like below.

Please input a string:

This is a list of courses. CSC 1010 - COMPUTERS & APPLICATION

Here is the letter frequency:

Letter a or A appears 3 times

Letter b or B appears 0 times

Letter c or C appears 5 times

Letter d or D appears 0 times

Letter e or E appears 2 times

Letter f or F appears 1 times

Letter g or G appears 0 times

Letter h or H appears 1 times

Letter i or I appears 5 times

Letter j or J appears 0 times

Letter k or K appears 0 times

Letter l or L appears 2 times

Letter m or M appears 1 times

Letter n or N appears 1 times

Letter o or O appears 4 times

Letter p or P appears 3 times

Letter q or Q appears 0 times

Letter r or R appears 2 times

Letter s or S appears 8 times

Letter t or T appears 4 times

Letter u or U appears 2 times

Letter v or V appears 0 times

Letter w or W appears 0 times

Letter x or X appears 0 times

Letter y or Y appears 0 times

Letter z or Z appears 0 times

Answer 1

C PROGRAM ====>

#include <stdio.h>

int main() {
char str[1000]; // max size is 1000

printf("Enter a string: ");
fgets(str, sizeof(str), stdin);

char str1[] = "abcdefghijklmnopqrstuvwxyz"; // alphabets in small letter
char str2[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; // alphabets in capital letter

for(int i=0;i<26;i++)
{
int count=0;
for (int j = 0; str[j] != '\0'; ++j)
{
if (str1[i] == str[j] || str2[i] == str[j]) // compare character of str with str1 and str2
{
++count;
}
}
printf("Letter %c or %c appears %d times\n",str1[i],str2[i],count);
}

return 0;
}

OUTPUT SCREENSHOT ===>