for(i=0;i<NUM;i++)
sprintf(&ch,"%20.20s%5.5s%5.5s%5.5s%5.5s%5.5s",man[i].name,man[i].score1,man[i].score2,man[i].score3,man[i].score4,man[i].score5);


warning: passing arg 1 of `sprintf' from incompatible pointer type


矛盾的指针类型，定义的都是char型啊

#include "stdio.h"
#define NUM 1
#define L 100
struct mem
{
    char name[20];
    char score1[5];
    char score2[5];
    char score3[5];
    char score4[5];
    char score5[5];
}man[NUM];
main()
{
    int i;
    char ch[NUM];
    for(i=0;i<NUM;i++)
     {
      printf("input name:\n");
      scanf("%s",man[i].name);
      printf("input score:\n");
      scanf("%s",man[i].score1);
      printf("input score:\n");
      scanf("%s",man[i].score2);
      printf("input score:\n");
      scanf("%s",man[i].score3);
      printf("input score:\n");
      scanf("%s",man[i].score4);
      printf("input score:\n");
      scanf("%s",man[i].score5);
     }
    printf("name\tscore1\tscore2\tscore3\tscore4\tscore5\n\n");
    for(i=0;i<NUM;i++)
    printf("%s\t%s\t%s\t%s\t%s\t%s\n",man[i].name,man[i].score1,man[i].score2,man[i].score3,man[i].score4,man[i].score5);

for(i=0;i<NUM;i++)
sprintf(&ch,"%20.20s%5.5s%5.5s%5.5s%5.5s%5.5s",man[i].name,man[i].score1,man[i].score2,man[i].score3,man[i].score4,man[i].score5);

编译可以过去了
不过在输出的时候会报段错误

#include "stdio.h"
#define NUM 3
#define L 100
struct mem
{
    char name[20];
    char score1[5];
    char score2[5];
    char score3[5];
    char score4[5];
    char score5[5];
}man[NUM];
main()
{
    int i;
    char ch;
    FILE *fp;
    for(i=0;i<NUM;i++)
     {
      printf("input name:\n");
      scanf("%s",man[i].name);
      printf("input score:\n");
      scanf("%s",man[i].score1);
      printf("input score:\n");
      scanf("%s",man[i].score2);
      printf("input score:\n");
      scanf("%s",man[i].score3);
      printf("input score:\n");
      scanf("%s",man[i].score4);
      printf("input score:\n");
      scanf("%s",man[i].score5);
     }
    printf("name\tscore1\tscore2\tscore3\tscore4\tscore5\n\n");
    for(i=0;i<NUM;i++)
   {
 printf("%s\t%s\t%s\t%s\t%s\t%s\n",man[i].name,man[i].score1,man[i].score2,man[i].score3,man[i].score4,man[i].score5);
}
for(i=0;i<NUM;i++)
{
sprintf(ch,"%-20.20s%5.5s%5.5s%5.5s%5.5s%5.5s",man[i].name,man[i].score1,man[i].score2,man[i].score3,man[i].score4,man[i].score5);
}
        fp = fopen("/home/wanwj/sdve/testc.txt","w");
        if(!fp)
        {
                printf("测试文件/home/wanwj/sdve/testc.txt打开错误!");
                return;
        }
        fputs( ch, fp );
        fclose(fp);
}

score.c: In function `main':
score.c:40: warning: passing arg 1 of `sprintf' makes pointer from integer without a cast
score.c:48: warning: passing arg 1 of `fputs' makes pointer from integer without a cast

小弟初学C给，谢谢大家了

#include "stdio.h"
#define NUM 3
#define L 100
struct mem
{
    char name[20];
    char score3[5];
    char score4[5];
    char score5[5];
}man[NUM];
main()
{
    int i;
    char ch[100];
    FILE *fp;
    for(i=0;i<NUM;i++)
     {
      printf("input name:\n");
      scanf("%s",man[i].name);
      printf("input score:\n");
      scanf("%s",man[i].score1);
      printf("input score:\n");
      scanf("%s",man[i].score2);
      printf("input score:\n");
      scanf("%s",man[i].score3);
      printf("input score:\n");
      scanf("%s",man[i].score4);
      printf("input score:\n");
      scanf("%s",man[i].score5);
     }
    printf("name\tscore1\tscore2\tscore3\tscore4\tscore5\n\n");
    for(i=0;i<NUM;i++)
   {
 printf("%s\t%s\t%s\t%s\t%s\t%s\n",man[i].name,man[i].score1,man[i].score2,man[i].score3,man[i].score4,man[i].score5);
}
fp = fopen("/home/wanwj/sdve/testc.txt","w");
if(!fp)
{
        printf("测试文件/home/wanwj/sdve/testc.txt打开错误!");
        return;
}
        for(i=0;i<NUM;i++)
        {
        sprintf(ch,"%-20.20s%5.5s%5.5s%5.5s%5.5s%5.5s",man[i].name,man[i].score1,man[i].score2,man[i].score3,man[i].score4,man[i].sc
ore5);
        fputs( ch, fp );
        }
        fclose(fp);
}

还是太粗心了，现在就可以了。