Question

Create a UNIX makefile for the following C program:

//convert.c

char toUpper(char c){

if(c>='a' && c<='z')

return c-32;

return c;

}

//converting sentance to upper

void convertSentence(char *sentence){

int i=0;

while(sentence[i]!='\0'){

//convert to upper for each character

sentence[i] = toUpper(sentence[i]);

i++;

}

}

//converting all sentences into uppercase

void convertAll(char **sentenceList, int numOfSentences){

int i=0;

while(i<numOfSentences){

//calling convertsentence function to conver uppercase

convertSentence(sentenceList[i]);

i++;

}

}

sentences.c

#include<stdio.h>

#include<stdlib.h>

#include "convert.c"

int main(){

//declaring character array

char **mySentences;

int noOfSentences;

//taking how many sentences that user taking

printf("Welcome.\nPlease tell me how many sentences you wish to enter (no more than 10): ");

scanf("%d", &noOfSentences);

printf("You entered %d. Please enter your sentences one at a time.\nA sentence can only store 100 characters.\n\n", noOfSentences);

//allocating dynamic memory for no of sentances

mySentences = (char **)malloc(noOfSentences*sizeof(char *));

int i;

for(i=0;i<noOfSentences; i++){

//allocating dynamic memory for sentence length with default 100

printf("Enter sentence #%d: ", i+1);

mySentences[i] = (char *)malloc(100*sizeof(char));

scanf("\n%[^\n]s", mySentences[i]);

}

//converting all sentences into upper case

convertAll(mySentences, noOfSentences);

//printing converted upper case sentences

printf("Your Converted Sentences are: \n");

int chars = 0, withOutSpaces = 0;

for(i=0;i<noOfSentences; i++){

int len = 0;

while(mySentences[i][len]!='\0'){

if(mySentences[i][len]!=' ')

withOutSpaces++;

len++;

chars++;

}

printf("%s\n", mySentences[i]);

}

printf("\nThere are %d Characters, or %d, not including the whitespace", chars, withOutSpaces);

printf("\n\nEnd Program");

printf("\nPress any key to continue . . .\n");

getchar();

return 0;

}

[rkv-sdc@localhost 888320181$ gcc -Wall sentences. [rkv-sdc@localhost θ8032018]s ·/a.out Welcone. Please tell ne how nany sentences you wish to enter (no nore than 10): 4 You entered 4. Please enter your sentences one at a tine. A sentence can only store 100 characters. Enter sentence #1: Hy nane is beth. Enter sentence #2 : Hello. Enter sentence #3: Goodbye 123 Enter sentence #4: I'm done Your Converted Sentences are: HY NAHE IS BETH HELLO GOODBYE 123 I'H DONE There are 41 Characters, or 36, not including the whitespace End Progran Press any key to continue .. . [rkv-sdc@localhost 080320181$

Answer 1

Below two lines are enough to make UNIX makefile for your c program. Create a file name called makefile and copy the below two lines into it.

sentences:
        gcc -Wall -o sentences sentences.c

Note:

There is a TAB space required in starting of the second line.

The general syntax of a Makefile.

target [target...] : [dependent ....]
[ command ...]

Arguments in brackets are optional. Note the tab space required before each command.

In our makefile target is sentences, no dependent and command is gcc -Wall -o sentences sentences.c