1 files changed, 33 insertions, 0 deletions
diff --git a/275/CH8/EX8.8.30a/Ch8_8_30a.sce b/275/CH8/EX8.8.30a/Ch8_8_30a.sce
new file mode 100755
index 000000000..7c0c1dbb7
--- /dev/null
+++ b/275/CH8/EX8.8.30a/Ch8_8_30a.sce
@@ -0,0 +1,33 @@
+clc
+clear
+disp("Example 8.30a")
+printf("\n")
+disp("perform the following decimal subtraction using 9s complements")
+disp("a)49-24    b)321-578")
+//given numbers
+a=49
+b=-24
+//should set to 99 if input is 2 digit number,999 if 3digit number
+c=99
+//add c with 2nd operand
+e=c+b
+N=a+e
+if(N>100)
+    if(N<199)
+    M=N-100
+    M=M+1
+    N=M
+end
+end
+if(N>1000)
+    if(N<1999)
+    M=N-1000
+    M=M+1
+    N=M
+end
+end
+    M=N
+if(-b>a)
+    M=-(999-M)
+end
+printf("result=%d",M)
+\ No newline at end of file