Soluções da aula prática 10

1a.
/* Edgar Alan Poe */
#include <stdio.h>

void main()
{
FILE *f;
char c;
int ci;
int cont[91];
int i;

for (i=65; i<=90; i++)
    cont[i] = 0;
f = fopen("theraven.txt", "r");
while (!feof(f))
{
    c=fgetc(f);              /* get a single character from file */
    printf("%c", c);         /* show it on screen */
    if ((c>=97) && (c<=122)) /* convert ot uppercase */
      c=c-32;
    if ((c>=65) && (c<=90)) /* count it in our histogram 'cont' */
      cont[c] = cont[c] + 1;
}
fclose(f);
for (i=65; i<=90; i++)
    printf("%c : %d\n", i, cont[i]);
}

output (ecrã)

A 339
B 94
C 71
D 194
E 618
F 94
G 122
H 290
I 318
J 2
K 32
L 225
M 158
N 374
O 370
P 95
Q 9
R 336
S 278
T 437
U 121
V 66
W 79
X 3
Y 100
Z 0

1b.
/* Edgar Alan Poe output to file */
#include <stdio.h>

void main()
{
FILE *f;
char c;
int ci;
int cont[91];
int i;

for (i=65; i<=90; i++)
    cont[i] = 0;
f = fopen("theraven.txt", "r");
while (!feof(f))
{
    c=fgetc(f);
    printf("%c", c);
    if ((c>=97) && (c<=122))
      c=c-32;
    if ((c>=65) && (c<=90))
      cont[c] = cont[c] + 1;
}
fclose(f);
f = fopen("contas.txt", "w");
for (i=65; i<=90; i++)
    fprintf(f, "%c : %d\n", i, cont[i]);
flcose(f);
}

1c.
/* Edgar Alan Poe */
#include <stdio.h>

void main()
{
FILE *f;
char c;
int ci;
int cont[91];
int i;
int maxn;

for (i=65; i<=90; i++)
    cont[i] = 0;
f = fopen("theraven.txt", "r");
while (!feof(f))
{
    c=fgetc(f);
    printf("%c", c);
    if ((c>=97) && (c<=122))
      c=c-32;
    if ((c>=65) && (c<=90))
      cont[c] = cont[c] + 1;
}
fclose(f);
maxn=0;
maxc=0;
for (i=65; i<=90; i++)
    if (cont[i]>maxn)
      {
        maxc = i;
        maxn = cont[i];
      }
printf("Max: %c %d\n", maxc, maxn);
}

output (ecrã)

Max: E 618