“How to search for a specific number in an array in the C language?”

In C language, a loop structure can be used to traverse an array, comparing each element with a target value until a matching element is found. Here is an example code:

#include <stdio.h>

int main() {
    int arr[] = {1, 2, 3, 4, 5};
    int target = 3;
    int length = sizeof(arr) / sizeof(arr[0]);
    int i;
    int found = 0;

    for (i = 0; i < length; i++) {
        if (arr[i] == target) {
            found = 1;
            break;
        }
    }

    if (found) {
        printf("找到了目标数值 %d，该数字在数组中的索引为 %d\n", target, i);
    } else {
        printf("未找到目标数值 %d\n", target);
    }

    return 0;
}

In the code above, we defined an integer array called ‘arr’ and a target value ‘target’. We then looped through the array, comparing each element with the target value. If a match was found, we set the ‘found’ flag to 1 and broke out of the loop. Finally, we used the value of ‘found’ to determine if the target value was found, and output the corresponding result.