Initial import (2.0.2-6)2.0.2-6

1 files changed, 44 insertions, 0 deletions

diff --git a/reference/C/CONTRIB/OR_PRACTICAL_C/07_3.c b/reference/C/CONTRIB/OR_PRACTICAL_C/07_3.c
new file mode 100644
index 0000000..bf66eb7
--- /dev/null
+++ b/reference/C/CONTRIB/OR_PRACTICAL_C/07_3.c
@@ -0,0 +1,44 @@
+#include <stdio.h>
+char  line[100];   /* line of text from input */
+
+int   result;      /* the result of the calculations */
+char  operator;    /* operator the user specified */
+int   value;       /* value specified after the operator */
+main()
+{
+    result = 0;    /* initialize the result */
+
+    /* loop forever (or until break reached) */
+    while (1) {
+        (void) printf("Result: %d\n", result);
+        (void) printf("Enter operator and number: ");
+
+        (void) fgets(line, sizeof(line), stdin);
+        (void) sscanf(line, "%c %d", &operator, &value);
+
+        if ((operator == 'q') || (operator == 'Q'))
+            break;
+        switch (operator) {
+        case '+':
+            result += value;
+            break;
+        case '-':
+            result -= value;
+            break;
+        case '*':
+            result *= value;
+            break;
+        case '/':
+            if (value == 0) {
+                (void)printf("Error:Divide by zero\n");
+                (void)printf("   operation ignored\n");
+            } else
+                result /= value;
+            break;
+        default:
+            (void) printf("Unknown operator %c\n", operator);
+            break;
+        }
+    }
+    return (0);
+}