具体代码如下
int main(void) {
        int a = 10;
        int b = -10;
        long int c = 2000;

        printf("a=%d,b=%d,c=%d\n",a,b,c);
//此处显示format '%n' expects argument of type 'int *', but argument 4 has type 'long int' [-Wformat=]

    return EXIT_SUCCESS;
}

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int a = 10;
    int b = -10;
    long int c = 2000;

    printf("a=%d,b=%d,c=%ld\n",a,b,c);

    return 0;
}