#include<stdio.h>
int main()
{
int price1=800,price2=100,price3=20,price4=40,price5=50,price6=90,price7=12;
int num1,num2,num3,num4,num5,num6,num7,temp,sum;
printf("请输入总金额:\n");
scanf("%d",&sum);
for(num1=6;num1<sum/price1;num1++)
for(num2=20;num2<sum/price2;num2++)
for(num3=20;num3<sum/price3;num3++)
for(num4=6;num4<sum/price4;num4++)
for(num5=60;num5<sum/price5;num5++)
for(num6=30;num6<sum/price6;num6++)
for(num7=30;num7<sum/price7;num7++)
{temp=num1*price1+num2*price2+num3*price3+num4*price4+num5*price5+num6*price6+num7*price7;
if temp==sum
printf("物品数量为：%d\n,%d\n,%d\n,%d\n,%d\n,%d\n,%d\t",num1,num2,num3,num4,num5,num6,num7);
}
return 0;
}

第一，你应该告诉大家你的代码想实现什么功能，从错误的代码中能看出正确的题目要求？
第二，你的代码应该排版一下，乱如麻，你让别人怎么阅读？
第三，编译失败，应该贴出编译器给出的错误信息，难道你想让别人进行“肉眼编译”？

#include <stdio.h>

int main( void )
{
    unsigned price1=800, price2=100, price3=20, price4=40, price5=50, price6=90, price7=12;

    unsigned sum;
    printf("请输入总金额: ");
    scanf( "%u", &sum );

    for( unsigned temp1=    0+ 6*price1; temp1<=sum; temp1+=price1 )
    for( unsigned temp2=temp1+20*price2; temp2<=sum; temp2+=price2 )
    for( unsigned temp3=temp2+20*price3; temp3<=sum; temp3+=price3 )
    for( unsigned temp4=temp3+ 6*price4; temp4<=sum; temp4+=price4 )
    for( unsigned temp5=temp4+60*price5; temp5<=sum; temp5+=price5 )
    for( unsigned temp6=temp5+30*price6; temp6<=sum; temp6+=price6 )
    for( unsigned temp7=temp6+30*price7; temp7<=sum; temp7+=price7 )
    {
        if( temp7 == sum )
        {
            printf( "物品数量为：%u, %u, %u, %u, %u, %u, %u\n"
                  , (temp1-    0)/price1
                  , (temp2-temp1)/price2
                  , (temp3-temp2)/price3
                  , (temp4-temp3)/price4
                  , (temp5-temp4)/price5
                  , (temp6-temp5)/price6
                  , (temp7-temp6)/price7 );
        }
    }
    return 0;
}