- 1-Hello World
- 2-Print an integer
- 3-Print an float
- 4-Read and print an integer
- 5-Addition of 2 integers
- 6-Substraction of 2 integers
- 7-If else statement
- 8-nested if
#include<stdio.h>
int main(){
printf("hello world");
return 0;
} .data
msg: .asciiz "hello world"
.text
li $v0,4
la $a0,msg
syscall#include<stdio.h>
int main(){
int number=2;
printf("%d",number);
return 0;
}.data
number: .word 2
.text
li $v0,1
lw $a0,number
syscall #include<stdio.h>
int main(){
float number=2.5;
printf("%f",number);
return 0;
}.data
number: .float 2.5
.text
li $v0,2
lwc1 $f12,number
syscall #include<stdio.h>
int main(){
int a;
printf("enter an integer : ");
scanf("%d",&a);
printf("your integer is : ");
printf("%d",a);
return 0;
}.data
msg1: .asciiz "enter an integer : "
msg2: .asciiz "your integer is : "
.text
print_msg1:li $v0,4
la $a0,msg1
syscall
read_integer:li $v0,5
syscall
la $s0,($v0) #save_integer_in_s0:
print_msg2:li $v0,4
la $a0,msg2
syscall
print_integer:li $v0,1
la $a0,($s0)
syscall #include<stdio.h>
int main()
{
int a,b,c;
scanf("%d%d",&a,&b);
c=a+b;
printf("%d",c);
return 0;
}li $v0,5
syscall
move $s0,$v0
li $v0,5
syscall
move $s1,$v0
add $s2,$s1,$s0
li $v0,1
move $a0,$s2
syscall#include<stdio.h>
int main()
{
int a,b,c;
scanf("%d%d",&a,&b);
c=a-b;
printf("%d",c);
return 0;
}li $v0,5
syscall
move $s0,$v0
li $v0,5
syscall
move $s1,$v0
sub $s2,$s0,$s1
li $v0,1
move $a0,$s2
syscall #include<stdio.h>
int main(){
int a=5,b=3,c=0;
if(a==b) c=a+b;
else c=a-b;
printf("%d",c);
return 0;
}li $t0,5 #a
li $t1,3 #b
li $t2,3 #c
beq $t0,$t1,if
j else
if:add $t2,$t0,$t1
else:sub $t2,$t0,$t1
print:
li $v0,1
move $a0,$t2
syscall #include<stdio.h>
int main(){
int a=1;
int b=4;
int c;
if(a==1)
{
c=a;
if(b!=3){
c+=b;
}
}
printf("%d",c);
}li $t0,1 #a
li $t1,4 #b
beq $t0,1,if
j print
if:
la $t2,($t0) #c
beq $t1,3,print
add $t2,$t2,$t1
print:
li $v0,1
move $a0,$t2
syscall #include<stdio.h>
int main(){
int a;
int b=0;
scanf("%d",&a);
switch(a){
case 0:b=-1; break;
case 1:b=0; break;
default :b=1; break;
}
printf("%d",b);
}# a====>$s0
# b====>$s1
read_a:li $v0,5
syscall
la $s0,($v0)
switch:
beq $s0,0,case0
beq $s0,1,case1
j default
case0:li $s1,-1
j print
case1:li $s1,0
j print
default:li $s1,1
print:
li $v0,1
move $a0,$s1
syscall #include<stdio.h>
int main(){
int x,n;
scanf("%d%d",&x,&n);
int i=0;
int p=1;
for(i=0;i<n;i++)
p*=x;
printf("%d",p);
}read_x:li $v0,5
syscall
la $s0,($v0)
read_n:li $v0,5
syscall
la $s1,($v0)
li $s2,1 #p
li $t0,0
loop:
beq $t0,3,print
mult $s2,$s0
mflo $s2
addi $t0,$t0,1
j loop
print:
li $v0,1
move $a0,$s2
syscall #include<stdio.h>
int main(){
int x;
scanf("%d",&x);
int i;
int f=1;
for(i=x;i>1;i--)
f*=i;
printf("%d",f);
}li $v0,5
syscall
la $s0,($v0)
li $s2,1
la $t0,($s0)
loop:
beq $t0,1,print
mult $s2,$t0
mflo $s2
subi $t0,$t0,1
j loop
print :
li $v0,1
la $a0,($s2)
syscall#include<stdio.h>
int main(){
int number;
read:scanf("%d",&number);
if(number%2==0){
printf("even\n");
goto read;
}
else printf("odd\n");
goto read;
}.data
even : .asciiz "even\n"
odd : .asciiz "odd\n"
.text
read:li $v0,5
syscall
move $s0,$v0
li $t0,2
div $s0,$t0
mfhi $t1
beq $t1,0,iseven
li $v0,4
la $a0,odd
syscall
j read
iseven: li $v0,4
la $a0,even
syscall
j read#include<stdio.h>
int main(){
int number,c;
read:scanf("%d",&number);
if((number & 1)==0){
printf("even\n");
goto read;
}
else printf("odd\n");
goto read;
}.data
even : .asciiz "even\n"
odd : .asciiz "odd\n"
.text
read:li $v0,5
syscall
move $s0,$v0
li $t0,2
andi $t0,$s0,1
beq $t0,0,iseven
li $v0,4
la $a0,odd
syscall
j read
iseven: li $v0,4
la $a0,even
syscall
j read#include<stdio.h>
int main(){
int a=3,b=7,c;
c=a;
a=b;
b=c;
print("%d\n%d",a,b);
return 0;
}li $s0,3 #a
li $s1,7 #b
la $t0,($s0)
la $s0,($s1)
la $s1,($t0)
li $v0,1
la $a0,($s0)
syscall
li $v0,1
la $a0,($s1)
syscall#include<stdio.h>
int main(){
int a=3,b=7;
a=a+b;
b=a-b;
a=a-b;
print("%d\n%d",a,b);
return 0;
}li $s0,3
li $s1,7
add $s0,$s0,$s1
sub $s1,$s0,$s1
sub $s0,$s0,$s1
li $v0,1
la $a0,($s0)
syscall
li $v0,1
la $a0,($s1)
syscall #include<stdio.h>
int main(){
int a=3,b=7;
a=a^b;
b=a^b;
a=a^b;
printf("%d\n%d",a,b);
return 0;
}li $s0,3
li $s1,7
xor $s0,$s0,$s1
xor $s1,$s0,$s1
xor $s0,$s0,$s1
li $v0,1
la $a0,($s0)
syscall
li $v0,1
la $a0,($s1)
syscall #include<stdio.h>
int main(){
int arr[5];
int i=0;
//read
for(i=0;i<5;i++){
scanf("%d",&arr[i]);
}
//print
for(i=0;i<5;i++){
printf("%d",arr[i]);
printf(" ");
}
}.data
arr: .space 20 #(20=5*4(Size of word))
space: .asciiz " "
.text
li $t0,0
read:
li $v0,5
syscall
sw $v0,arr($t0)
addi $t0,$t0,4
blt $t0,20,read
la $s0,arr
li $t0,0
print:
li $v0,1
lw $a0,($s0)
syscall
addi $t0,$t0,4
addi $s0,$s0,4
li $v0,4
la $a0,space
syscall
blt $t0,20,print#include<stdio.h>
int main(){
int tab[10]={0,1,2,3,4,5,6,7,8,9};
int s=0;
int i=0;
while(i<10){
s+=*(tab+i); // s=s+tab[i]
i++;
}
printf("%d",s);
return 0;
}.data
tab: .byte 0,1,2,3,4,5,6,7,8,9
.text
main:
la $t0, tab
li $a0,0 #compteur
li $s0,0 #somme
loop:
lb $t1,($t0)
add $s0,$s0,$t1
addi $t0,$t0,1
addi $a0,$a0,1
bne $a0,10,loop#include<stdio.h>
#include<time.h>
#include<stdlib.h>
int main(){
srand(time(NULL));
int r = rand()%10;
printf("%i", r);
return 0;
} In order to get a random number we have to assign the register $v0 with the value 42. The value stored in $a1 represent the upper value of the generated random number.
.text
#get random int belongs to the interval 0,10
li $v0,42
li $a1,10
syscall
print:
li $v0,1
syscall