From: Sorina Pop <sorina.pop@creatis.insa-lyon.fr>
Date: Thu, 19 Nov 2020 16:43:56 +0000 (+0100)
Subject: Added a second argument for the file name
X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?p=demoSorina.git;a=commitdiff_plain

Added a second argument for the file name
---

diff --git a/hello.c b/hello.c
index 1494454..a5e2573 100644
--- a/hello.c
+++ b/hello.c
@@ -2,27 +2,23 @@
 #include <stdlib.h>
 
 int main(int argc, char *argv[]) {
-
-        /* This is a comment in C */
-
-        printf("This is a C program\n");
-	FILE *f = fopen("hello.txt", "w");
-	if (f == NULL){
-	    printf("Error opening file!\n");
-    	    exit(1);
-	}
-
-	if (argc>1) {
-        	printf("Hello %s !\n", argv[1]);
-		fprintf(f, "Hello %s !\n",  argv[1]);
- 	}else{
-		printf("Hello world !\n");
-		fprintf(f, "Hello world !\n");
-	}
-
-		/* print some text */
-	fclose(f);
-        printf("This is the end of my C program\n");
-    	exit(0);
+	if (argc == 3) {
+                /*Opening the file provided as a second argument*/
+                FILE *f = fopen(argv[2], "w");
+                if (f == NULL){
+                  printf("Error opening file!\n");
+                  exit(1);
+                }
+                /*Saying hello to the name provided as a first argument*/
+                printf("Hello %s !\n", argv[1]);
+                fprintf(f, "Hello %s !\n",  argv[1]);
+                fclose(f);
+        }else{
+                printf("This is a C program expecting 2 arguments: the name to say hello to and the output file name\n");
+                printf("You have not provided the correct number of arguments\n");
+                exit(1);
+        }
+        exit(0);
 
 }
+