CIS2500 - lab 01 - uppercase

uppercase.c

#include <stdio.h>
#include "uppercase.h"

int main(int argc, char** argv) {

    FILE* textFile;
    char text[BUFFER];

    /* Open text file */
    textFile = fopen(argv[1], "r");
    if (textFile) {
        fgets(text, BUFFER, textFile);
    } else {
        printf("Could not open text file. Exiting.");
        return (1);
    }

    /* Print text before transformation */
    printf("Text Before:\n");
    printf("%s\n", text);

    /* Transform text, print results */
    uppercase(text);
    printf("Text After:\n");
    printf("%s\n", text);

    return 0;
}

void uppercase(char text[]) {

    char currentChar;
    int i = 0;

    do {
        currentChar = text[i];

        if (currentChar >= 'a' && currentChar <= 'z') {
            text[i] -= 32;
        }

        i++;

    } while (text[i]);

    fclose(textFile);
    return;
}

uppercase.h

#ifndef __JWILLI19__HELLO__
#define __JWILLI19__HELLO__

#define BUFFER 500

void uppercase(char text[]);

#endif