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# Integer Overflow

**Example 1: C**

**Vulnerable Code:**

```c
cCopy codeint a = INT_MAX;
int b = a + 1;
```

**Reason for vulnerability:** Adding 1 to the maximum integer value, causing overflow.

**Fixed Code:**

```c
cCopy codeint a = INT_MAX;
if (a + 1 < a) {
    printf("Integer overflow detected\n");
} else {
    int b = a + 1;
}
```

**Reason for fix:** Check for overflow before performing the addition.

**Example 2: Java**

**Vulnerable Code:**

```java
javaCopy codeint a = Integer.MAX_VALUE;
int b = a + 1;
```

**Reason for vulnerability:** Adding 1 to the maximum integer value, causing overflow.

**Fixed Code:**

```java
javaCopy codeint a = Integer.MAX_VALUE;
if (a + 1 < a) {
    System.out.println("Integer overflow detected");
} else {
    int b = a + 1;
}
```

**Reason for fix:** Check for overflow before performing the addition.