Write program two and run it to find the sum of all the elements on two diagonal lines of a 4 4 matr

The ** provided is mainly based on the following two errors:

1. If you want to initialize a 4*4 matrix by assigning values, you need to loop in two layers.

instead of writing "scanf(" on a separate line"%d",&a[i][j]);Only one element will be recorded.

2. if(i=j) is wrong, it should be "==". in the C language.

It is best to use {} to reconcile hierarchical relationships.

The modified ** is as follows:

#include<

int main()

int s,a[4][4],i=0,j=0;

for(i=0;i<4;i++)

for(j=0;j<4;j++)

scanf("%d",&a[i][j]);

for(i=0;i<4;i++)

for(j=0;j<4;j++)

if(i==j)

s=s+a[i][j];

if(i+j==3)

s=s+a[i][j];

printf("%d",s);

return 0;

The following figure shows the result.

In the fourth line, ints is changed to int s, one less space, and the input is not correct, scanf should be placed in the for loop, and the initial value of s should be assigned 0, so many mistakes ==

The ** provided is mainly based on the following two errors:

1. If you want to initialize the 4*4 matrix by way of assignment, you need to write the scanf statement in the two-layer for loop, instead of writing "scanf(" on a separate line"%d",&a[i][j]);Only one element will be recorded.

2. if(i=j) error, it should be "==In the writing of C language, it is best to use {} to regulate the hierarchical relationship.

The modified ** is as follows:

#include

int main()

for(i=0;i<4;i++)

printf("%d",s);

return 0;

The following figure shows the result.

The ** provided is mainly based on the following two errors:

1. If you want to initialize the 4*4 matrix by way of assignment, you need to write the scanf statement in the two-layer for loop, instead of writing "scanf(" on a separate line"%d",&a[i][j]);Only one element will be recorded.

2. if(i=j) error, it should be "==In the writing of C language, it is best to use {} to adjust the hierarchical relationship of pants.

The modified ** is as follows:

#include

int main()

int s,a[4][4],i=0,j=0;

for(i=0;i<4;i++)

for(j=0;j<4;j++)

scanf("%d",&a[i][j]);

for(i=0;i<4;i++)

for(j=0;j<4;j++)

if(i==j)

s=s+a[i][j];

if(i+j==3)

s=s+a[i][j];

printf("%d",s);

return 0;

The result of pure delay in the operation of the file is shown in the figure below.

Hello! In the fourth line, ints are changed to ints

s, one less space, and the input is not right, scanf should be placed in the for loop, and the initial value of s should be assigned 0, so many mistakes ==

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