first attempt on C subunit

.gitignore

@@ -11,4 +11,7 @@
 *.mov
 *.wmv
 *.avi
-*.avchd
\ No newline at end of file
+*.avchd
+
+# C exec files
+*.ce
\ No newline at end of file

C-subunit/arithmetic.c

+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+float take_average(int sum, int count) {
+    return (float)sum / (float)count;
+}
+
+
+int main(int argc, char *argv[]) {
+    FILE *inputFileHandle = NULL; 
+    char inputFileName[128]; 
+    int value = 0; 
+    int sum = 0;
+    int count = 0;
+    float average = 0.0; 
+
+    if (argc < 2) {
+        printf("usage: fopen <infile>\n");
+        exit(1);
+    }
+
+    strcpy(inputFileName, argv[1]);
+
+    if ((inputFileHandle = fopen(inputFileName, "r")) == NULL) {
+        fprintf(stderr, "error opening file: %s\n", inputFileName); 
+        exit(1);
+    }
+
+    while (fscanf(inputFileHandle, "%d", &value) != EOF) {
+        count++;
+        sum = sum + value; 
+    }
+
+    fclose(inputFileHandle); 	
+
+    average = take_average(sum, count);
+
+    fprintf(stdout, "file = %s, count = %d, sum = %d, average =%8.2f\n", 
+            inputFileName, count, sum, average); 
+
+    return(0); 
+}

C-subunit/hello-world.c

+#include <stdio.h>
+
+int main(void) {
+  printf("Hello World\n");
+  return 0;
+}

C-subunit/integers.dat

+8
+10
+2
+0
+5
+38
+1001
+25
+81
+300
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