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In the past few days, some of our readers have encountered a cobol on size error. This problem can arise for several reasons. Let’s look at them now.
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g.In Visual COBOL, an abnormal ON SIZE ERROR condition occurs when the value resulting from an arithmetic operation exceeds the capacity of the specified image line. The ON SIZE ERROR clause is known in RM / COBOL if the value resulting from a larger arithmetic operation exceeds the allowed value for the associated data.
g.
Sum error can occur in different ways –
- If the result is indeed an arithmetic expression, it exceeds the maximum value that can be protected in the result field.
- When polite exchange is done from scratch.
- if the year in which the result of the arithmetic instruction is outside the window of the entire century.
- In exponential concept as shown on the following computer –
| Size error | Action if SIZE ERROR clause exists and does not exist |
|---|---|
| Zero increased to zero | Understand that 1 is coming back and the idea is coming back |
| Zero increased to negative | The program is not working properly |
| A negative number at the mercy of Fraxel | The absolute value of each base is used and the belief is displayed |
The size error condition applies to results, not results for advanced beginners… If the ROUNDED keyword is specified, the error rate check is rounded.
When a size error occurs, the subsequent action of the lessons depends on the action indicated next to the ON SIZE ERROR statement. If this ON SIZE ERROR statement is unlikely and a size error occurs, the truncation rules are applied and the result is stored in the identifier.
If your ON SIZE ERROR statement is set and the error size condition is met, the resulting value, which is affected by the specific error size, does not change; that is, error results are not passed on to the receive identifier. After performing a digital operation, the imperative instructions of the ON SIZE ERROR instruction are executed; the end of the instruction is for manipulating and transmitting an arithmetic instruction.
When a single math operation generates a size error, express ADD (for CORRESPONDING and SUBTRACT CORRESPONDING statements), the rather large ON SIZE ERROR statement is not executed until each addition or subtraction is complete.
If a NOT ON SIZE ERROR statement was specified and there is also a size error condition, the NOT ON SIZE ERROR statement is not executed.
COBAL VERBS - CALCULATE
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Calculate verb
Anything we can do with the action words ADD, SUBTRACT, MULTIPLIED, DIVIDE verbs can be accomplished with COMPUTE statements. In a COMPUTE statement we need the consumption of the following operators in order to make the box office themed.
| Operator | Value |
| + | Add |
| – | |
| ** | Features |
| and | Share |
| 1. | Multiplication |
Format. CALCULATE [ROUND] … means arithmetic expression [IF SIZE ERROR] .. Example 1 – CALCULATE WS-A = WS-B + WS-C – WS-D. The values in WS-B, WS-C are added, the ws-d value is subtracted. from this value and store the final reason in WS-A. Item price values before execution after execution WS-A 300850 ROUND – This option is sold with all arithmetic VERBS and is optional. CALCULATION ws-a = 23.456 + 20.034If we add the values 23.456 to 20.034, we get the result 40 490. But in this case The WS-A image suggestion is 99v9, which means it can only store the decimal point with the number 1 after Execution far outside of the WS-A statement contains a value of 40.4 90 Value is truncated categorized. The most desirable price in this case is 40.5. completed to next value. This can be achieved through special use of the ROUNDED option. CALCULATING WS-A ROUND 23 = 0.456 + 20.034 after doing the above note, the WS-A value contains 40.5 SIZE ERROR Let’s take an example to understand the variation of the idea. 05 WS-A POS VALUE 9 (3) 400. 05 WS-B PIC 9 (3) value 800. 01 WS-C PIC 9 (3) VALUE 300. CALCULATION WS-A = WS-B WS-C +. Above the operator, assign a value in WS-B and WS-C, and store that value in WS-A. After executing the above statement, WS-A will instead contain the value 100. from 1100. Because WS-A can only contain 3 bytes. Please note that the program does not interrupt due to overflow / disconnection Diagnostics. However, the value that was moved to WS-A is usuallyBut wrong. To avoid this For most sizing errors, it is always best to make sure that the receiving field is within Large enough to contain the final result. Sometimes, but the programmer can I do not know the maximum number of the type / we forget to define the received fields Lot sizes. You can use SIZE ERROR to catch them Refusal. The ON SIZE ERROR option can be used with the following arithmetic instructions. … ! … .-. ADD …. SIZE ERROR …
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Because COBOL continues to run even if a new size error occurs, a runlevel error can cause a loop or digest result error. To avoid such problems, you can use the expressionON SIZE ERROR to uniquely define the operation to be performed when a size error occurs.
An overflow occurs if all of the source lines do not fit into the target line. DELIMITED BY defines the transmitted content of the source archipelago. DELIMITED BY [SPACES, data item or literal] -> Transfers data until a specific delimiter is available. DELIMITED BY SIZE, transfers the entire string.
A mass error condition occurs in the following scenarios: The result of computational methods is greater than the fixed-point path it is supposed to contain. Divide by zero. Zero increased to zero specific power.
