Shell Programming and Scripting

#!/bin/bash

echo "Number of factorials:"
read h

for (( i = 0; $i < h; i++ ))
do
echo "Enter the factor $i:"
read d
a[$i]=$d
b[$i]=$(fun $d)
done
echo ${a[*]}
echo ${b[*]}


fun()
{
j=`expr 1 + $1`
z=1
f=0

for (( i = 1; $i < $j; i++ ))
do
f=`expr $j - $i`
z=`expr $z \* $f`
done
return $z
}

#!/bin/bash
fun() {
        # makes these local to the function.
        declare -i j z f i n=$1

        j=$(( 1 + n ))
        z=1
        f=0

        for (( i = 1; i < j; i++ ))
        do
                f=$(( j - i ))
                z=$(( z * f ))
        done

        echo "$z" # THIS WAS YOUR PRIMARY FAULT!
}

echo "Number of factorials:"
read h

for (( i = 0; i < h; i++ ))
do
        echo "Enter the factor $i:"
        read d
        a[i]=$d
        b[i]=$(fun $d)
done

echo ${a[*]}
echo ${b[*]}

#!/bin/bash

fun()
{
j=`expr 1 + $1`
z=1
f=0
for (( i = 1; $i < $j; i++ ))
do
f=`expr $j - $i`
z=`expr $z \* $f`
done
echo $z
}

echo -n "Enter the number of factors: "
read b
i=0

while [ $i -lt $b ]
do
echo -n "Enter the factor: "
read d
a=("${a[@]}" "$(fun $d)") #a=($(fun $d)). the previous wrong code, now corrected.
echo "The factorial for $d is  ${a[$i]}"
i=$(( i + 1 ))
done

echo ""
echo "Total elements in the arrary A are ${#a[*]}"
echo ""

for (( i = 0; i < ${#a[*]}; i++ ))
do
echo "a[$i] = ${a[$i]}"
done
echo ""

#!/bin/bash

fator(){
j=$(( $1 + 1 ))
z=1
f=0
# echo $j
for (( p = 1; $p < $j; p++ ))
do
f=`expr $j - $p`
z=`expr $z \* $f`
done
echo "$z"
return
}


k=("$@")
echo ${k[*]}
echo "No of arguments: $#"
echo "length of array is: ${#k[*]}"

i=0

while [ $i -lt ${#k[*]} ]
do
echo "k[$i] = ${k[$i]}"
a=("${a[$i]}" "$(fator ${k[$i]})")
echo "a[$i] = ${a[$i]}"

i=$(( $i + 1 ))

done
echo ""

./fac3b 7 6 8 9