linux进程 命令行参数

#include <stdio.h>

int main(int argc, char *argv[]) {
    if (argc < 2) {
        printf("Usage: %s <option>\n", argv[0]);
        return 1;
    }

    if (strcmp(argv[1], "-h") == 0) {
        printf("Help information\n");
    } else if (strcmp(argv[1], "-v") == 0) {
        printf("Version 1.0\n");
    } else {
        printf("Unknown option: %s\n", argv[1]);
    }

    return 0;
}

if (argc < 2) {
    fprintf(stderr, "Error: Insufficient arguments\n");
    return 1;
}

if ((strcmp(argv[1], "-a") == 0 && strcmp(argv[2], "-b") == 0) ||
    (strcmp(argv[1], "-b") == 0 && strcmp(argv[2], "-a") == 0)) {
    fprintf(stderr, "Error: Parameters -a and -b cannot be used together\n");
    return 1;
}

int value;
if (sscanf(argv[2], "%d", &value) != 1 || value < 0 || value > 100) {
    fprintf(stderr, "Error: Invalid value for parameter -n\n");
    return 1;
}